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Finding the Fourth Proportional to 18,062.95, 24,918.55 and 11,691.58

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Solution

The fourth proportional to 18,062.95, 24,918.55 and 11,691.58 is: 16,129.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,062.95 : 24,918.55 = 11,691.58 : x
  2. Step 2: Convert to fraction form
    18,062.95/24,918.55 = 11,691.58/x
  3. Step 3: Cross multiply
    18,062.95x = 24,918.55 × 11,691.58
  4. Step 4: Simplify right side
    18,062.95x = 291,337,162.35
  5. Step 5: Solve for x
    x = 291,337,162.35/18,062.95
  6. Step 6: Final answer
    x = 16,129.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.