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Finding the Fourth Proportional to 72,178.92, 108,669.51 and 62,534.25

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Solution

The fourth proportional to 72,178.92, 108,669.51 and 62,534.25 is: 94,148.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,178.92 : 108,669.51 = 62,534.25 : x
  2. Step 2: Convert to fraction form
    72,178.92/108,669.51 = 62,534.25/x
  3. Step 3: Cross multiply
    72,178.92x = 108,669.51 × 62,534.25
  4. Step 4: Simplify right side
    72,178.92x = 6,795,566,305.72
  5. Step 5: Solve for x
    x = 6,795,566,305.72/72,178.92
  6. Step 6: Final answer
    x = 94,148.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.