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Finding the Fourth Proportional to 74,463.72, 102,760.68 and 40,472.22

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Solution

The fourth proportional to 74,463.72, 102,760.68 and 40,472.22 is: 55,852.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,463.72 : 102,760.68 = 40,472.22 : x
  2. Step 2: Convert to fraction form
    74,463.72/102,760.68 = 40,472.22/x
  3. Step 3: Cross multiply
    74,463.72x = 102,760.68 × 40,472.22
  4. Step 4: Simplify right side
    74,463.72x = 4,158,952,848.31
  5. Step 5: Solve for x
    x = 4,158,952,848.31/74,463.72
  6. Step 6: Final answer
    x = 55,852.07

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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.