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Finding the Fourth Proportional to 639,381.51, 959,063.91 and 183,984.63

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Solution

The fourth proportional to 639,381.51, 959,063.91 and 183,984.63 is: 275,974.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,381.51 : 959,063.91 = 183,984.63 : x
  2. Step 2: Convert to fraction form
    639,381.51/959,063.91 = 183,984.63/x
  3. Step 3: Cross multiply
    639,381.51x = 959,063.91 × 183,984.63
  4. Step 4: Simplify right side
    639,381.51x = 176,453,018,627.70
  5. Step 5: Solve for x
    x = 176,453,018,627.70/639,381.51
  6. Step 6: Final answer
    x = 275,974.54

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.