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Finding the Fourth Proportional to 54,454,981.60, 81,682,472.40 and 42,125,550.40

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Solution

The fourth proportional to 54,454,981.60, 81,682,472.40 and 42,125,550.40 is: 63,188,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,454,981.60 : 81,682,472.40 = 42,125,550.40 : x
  2. Step 2: Convert to fraction form
    54,454,981.60/81,682,472.40 = 42,125,550.40/x
  3. Step 3: Cross multiply
    54,454,981.60x = 81,682,472.40 × 42,125,550.40
  4. Step 4: Simplify right side
    54,454,981.60x = 3,440,919,107,882,809
  5. Step 5: Solve for x
    x = 3,440,919,107,882,809/54,454,981.60
  6. Step 6: Final answer
    x = 63,188,325.60

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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.