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Finding the Fourth Proportional to 74,891,291.80, 112,336,937.70 and 63,581,877.40

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Solution

The fourth proportional to 74,891,291.80, 112,336,937.70 and 63,581,877.40 is: 95,372,816.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,891,291.80 : 112,336,937.70 = 63,581,877.40 : x
  2. Step 2: Convert to fraction form
    74,891,291.80/112,336,937.70 = 63,581,877.40/x
  3. Step 3: Cross multiply
    74,891,291.80x = 112,336,937.70 × 63,581,877.40
  4. Step 4: Simplify right side
    74,891,291.80x = 7,142,593,400,332,838
  5. Step 5: Solve for x
    x = 7,142,593,400,332,838/74,891,291.80
  6. Step 6: Final answer
    x = 95,372,816.10

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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.