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Finding the Fourth Proportional to 61,658.16, 92,487.96 and 21,678.32

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Solution

The fourth proportional to 61,658.16, 92,487.96 and 21,678.32 is: 32,517.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,658.16 : 92,487.96 = 21,678.32 : x
  2. Step 2: Convert to fraction form
    61,658.16/92,487.96 = 21,678.32/x
  3. Step 3: Cross multiply
    61,658.16x = 92,487.96 × 21,678.32
  4. Step 4: Simplify right side
    61,658.16x = 2,004,983,130.59
  5. Step 5: Solve for x
    x = 2,004,983,130.59/61,658.16
  6. Step 6: Final answer
    x = 32,517.73

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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.