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Finding the Fourth Proportional to 55,864,981.80, 83,797,472.70 and 49,487,689.80

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Solution

The fourth proportional to 55,864,981.80, 83,797,472.70 and 49,487,689.80 is: 74,231,534.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,864,981.80 : 83,797,472.70 = 49,487,689.80 : x
  2. Step 2: Convert to fraction form
    55,864,981.80/83,797,472.70 = 49,487,689.80/x
  3. Step 3: Cross multiply
    55,864,981.80x = 83,797,472.70 × 49,487,689.80
  4. Step 4: Simplify right side
    55,864,981.80x = 4,146,943,335,001,568.50
  5. Step 5: Solve for x
    x = 4,146,943,335,001,568.50/55,864,981.80
  6. Step 6: Final answer
    x = 74,231,534.70

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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.