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Finding the Fourth Proportional to 74,248.55, 111,363.77 and 21,658.08

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Solution

The fourth proportional to 74,248.55, 111,363.77 and 21,658.08 is: 32,484.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,248.55 : 111,363.77 = 21,658.08 : x
  2. Step 2: Convert to fraction form
    74,248.55/111,363.77 = 21,658.08/x
  3. Step 3: Cross multiply
    74,248.55x = 111,363.77 × 21,658.08
  4. Step 4: Simplify right side
    74,248.55x = 2,411,925,439.76
  5. Step 5: Solve for x
    x = 2,411,925,439.76/74,248.55
  6. Step 6: Final answer
    x = 32,484.48

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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.