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Finding the Fourth Proportional to 98,737.50, 136,257.84 and 54,025.50

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Solution

The fourth proportional to 98,737.50, 136,257.84 and 54,025.50 is: 74,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,737.50 : 136,257.84 = 54,025.50 : x
  2. Step 2: Convert to fraction form
    98,737.50/136,257.84 = 54,025.50/x
  3. Step 3: Cross multiply
    98,737.50x = 136,257.84 × 54,025.50
  4. Step 4: Simplify right side
    98,737.50x = 7,361,397,934.92
  5. Step 5: Solve for x
    x = 7,361,397,934.92/98,737.50
  6. Step 6: Final answer
    x = 74,555.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.