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Finding the Fourth Proportional to 74,248.73, 111,364.05 and 21,658.27

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Solution

The fourth proportional to 74,248.73, 111,364.05 and 21,658.27 is: 32,484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,248.73 : 111,364.05 = 21,658.27 : x
  2. Step 2: Convert to fraction form
    74,248.73/111,364.05 = 21,658.27/x
  3. Step 3: Cross multiply
    74,248.73x = 111,364.05 × 21,658.27
  4. Step 4: Simplify right side
    74,248.73x = 2,411,952,663.19
  5. Step 5: Solve for x
    x = 2,411,952,663.19/74,248.73
  6. Step 6: Final answer
    x = 32,484.77

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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.