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Finding the Fourth Proportional to 72,355.50, 99,862.47 and 45,502.02

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Solution

The fourth proportional to 72,355.50, 99,862.47 and 45,502.02 is: 62,800.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,355.50 : 99,862.47 = 45,502.02 : x
  2. Step 2: Convert to fraction form
    72,355.50/99,862.47 = 45,502.02/x
  3. Step 3: Cross multiply
    72,355.50x = 99,862.47 × 45,502.02
  4. Step 4: Simplify right side
    72,355.50x = 4,543,944,107.19
  5. Step 5: Solve for x
    x = 4,543,944,107.19/72,355.50
  6. Step 6: Final answer
    x = 62,800.26

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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.