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Finding the Fourth Proportional to 72,877.54, 109,316.31 and 41,690.92

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Solution

The fourth proportional to 72,877.54, 109,316.31 and 41,690.92 is: 62,536.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,877.54 : 109,316.31 = 41,690.92 : x
  2. Step 2: Convert to fraction form
    72,877.54/109,316.31 = 41,690.92/x
  3. Step 3: Cross multiply
    72,877.54x = 109,316.31 × 41,690.92
  4. Step 4: Simplify right side
    72,877.54x = 4,557,497,534.91
  5. Step 5: Solve for x
    x = 4,557,497,534.91/72,877.54
  6. Step 6: Final answer
    x = 62,536.38

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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.