Home / 19,857,058,856.40-29,785,588,284.60-11,585,285,979.60

Finding the Fourth Proportional to 19,857,058,856.40, 29,785,588,284.60 and 11,585,285,979.60

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Solution

The fourth proportional to 19,857,058,856.40, 29,785,588,284.60 and 11,585,285,979.60 is: 17,377,928,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857,058,856.40 : 29,785,588,284.60 = 11,585,285,979.60 : x
  2. Step 2: Convert to fraction form
    19,857,058,856.40/29,785,588,284.60 = 11,585,285,979.60/x
  3. Step 3: Cross multiply
    19,857,058,856.40x = 29,785,588,284.60 × 11,585,285,979.60
  4. Step 4: Simplify right side
    19,857,058,856.40x = 345,074,558,347,714,363,392
  5. Step 5: Solve for x
    x = 345,074,558,347,714,363,392/19,857,058,856.40
  6. Step 6: Final answer
    x = 17,377,928,969.40

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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.