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Finding the Fourth Proportional to 122,165.70, 183,248.55 and 92,641.20

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Solution

The fourth proportional to 122,165.70, 183,248.55 and 92,641.20 is: 138,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,165.70 : 183,248.55 = 92,641.20 : x
  2. Step 2: Convert to fraction form
    122,165.70/183,248.55 = 92,641.20/x
  3. Step 3: Cross multiply
    122,165.70x = 183,248.55 × 92,641.20
  4. Step 4: Simplify right side
    122,165.70x = 16,976,365,570.26
  5. Step 5: Solve for x
    x = 16,976,365,570.26/122,165.70
  6. Step 6: Final answer
    x = 138,961.80

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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.