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Finding the Fourth Proportional to 17,417.60, 24,043.20 and 11,139.20

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Solution

The fourth proportional to 17,417.60, 24,043.20 and 11,139.20 is: 15,376.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,417.60 : 24,043.20 = 11,139.20 : x
  2. Step 2: Convert to fraction form
    17,417.60/24,043.20 = 11,139.20/x
  3. Step 3: Cross multiply
    17,417.60x = 24,043.20 × 11,139.20
  4. Step 4: Simplify right side
    17,417.60x = 267,822,013.44
  5. Step 5: Solve for x
    x = 267,822,013.44/17,417.60
  6. Step 6: Final answer
    x = 15,376.52

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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.