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Finding the Fourth Proportional to 99,817,806.80, 149,474,767.80 and 65,553,640.40

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Solution

The fourth proportional to 99,817,806.80, 149,474,767.80 and 65,553,640.40 is: 98,165,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,817,806.80 : 149,474,767.80 = 65,553,640.40 : x
  2. Step 2: Convert to fraction form
    99,817,806.80/149,474,767.80 = 65,553,640.40/x
  3. Step 3: Cross multiply
    99,817,806.80x = 149,474,767.80 × 65,553,640.40
  4. Step 4: Simplify right side
    99,817,806.80x = 9,798,615,177,234,700
  5. Step 5: Solve for x
    x = 9,798,615,177,234,700/99,817,806.80
  6. Step 6: Final answer
    x = 98,165,001.73

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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.