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Finding the Fourth Proportional to 265,718,101.20, 398,577,151.80 and 156,431,086.80

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Solution

The fourth proportional to 265,718,101.20, 398,577,151.80 and 156,431,086.80 is: 234,646,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,718,101.20 : 398,577,151.80 = 156,431,086.80 : x
  2. Step 2: Convert to fraction form
    265,718,101.20/398,577,151.80 = 156,431,086.80/x
  3. Step 3: Cross multiply
    265,718,101.20x = 398,577,151.80 × 156,431,086.80
  4. Step 4: Simplify right side
    265,718,101.20x = 62,349,857,029,722,584
  5. Step 5: Solve for x
    x = 62,349,857,029,722,584/265,718,101.20
  6. Step 6: Final answer
    x = 234,646,630.20

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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.