Home / 38,961,370,819.72-53,772,336,480.94-21,815,329,058.91

Finding the Fourth Proportional to 38,961,370,819.72, 53,772,336,480.94 and 21,815,329,058.91

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Solution

The fourth proportional to 38,961,370,819.72, 53,772,336,480.94 and 21,815,329,058.91 is: 30,108,314,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,961,370,819.72 : 53,772,336,480.94 = 21,815,329,058.91 : x
  2. Step 2: Convert to fraction form
    38,961,370,819.72/53,772,336,480.94 = 21,815,329,058.91/x
  3. Step 3: Cross multiply
    38,961,370,819.72x = 53,772,336,480.94 × 21,815,329,058.91
  4. Step 4: Simplify right side
    38,961,370,819.72x = 1,173,061,214,598,136,725,504
  5. Step 5: Solve for x
    x = 1,173,061,214,598,136,725,504/38,961,370,819.72
  6. Step 6: Final answer
    x = 30,108,314,720.91

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.