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Finding the Fourth Proportional to 61,920.68, 92,876.16 and 22,486.64

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Solution

The fourth proportional to 61,920.68, 92,876.16 and 22,486.64 is: 33,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,920.68 : 92,876.16 = 22,486.64 : x
  2. Step 2: Convert to fraction form
    61,920.68/92,876.16 = 22,486.64/x
  3. Step 3: Cross multiply
    61,920.68x = 92,876.16 × 22,486.64
  4. Step 4: Simplify right side
    61,920.68x = 2,088,472,774.50
  5. Step 5: Solve for x
    x = 2,088,472,774.50/61,920.68
  6. Step 6: Final answer
    x = 33,728.20

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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.