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Finding the Fourth Proportional to 99,232.50, 136,943.01 and 54,520.50

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Solution

The fourth proportional to 99,232.50, 136,943.01 and 54,520.50 is: 75,239.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,232.50 : 136,943.01 = 54,520.50 : x
  2. Step 2: Convert to fraction form
    99,232.50/136,943.01 = 54,520.50/x
  3. Step 3: Cross multiply
    99,232.50x = 136,943.01 × 54,520.50
  4. Step 4: Simplify right side
    99,232.50x = 7,466,201,376.71
  5. Step 5: Solve for x
    x = 7,466,201,376.71/99,232.50
  6. Step 6: Final answer
    x = 75,239.48

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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.