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Finding the Fourth Proportional to 24,840.80, 34,281.20 and 13,663.20

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Solution

The fourth proportional to 24,840.80, 34,281.20 and 13,663.20 is: 18,855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,840.80 : 34,281.20 = 13,663.20 : x
  2. Step 2: Convert to fraction form
    24,840.80/34,281.20 = 13,663.20/x
  3. Step 3: Cross multiply
    24,840.80x = 34,281.20 × 13,663.20
  4. Step 4: Simplify right side
    24,840.80x = 468,390,891.84
  5. Step 5: Solve for x
    x = 468,390,891.84/24,840.80
  6. Step 6: Final answer
    x = 18,855.71

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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.