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Finding the Fourth Proportional to 17,886.71, 24,690.28 and 15,358.66

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Solution

The fourth proportional to 17,886.71, 24,690.28 and 15,358.66 is: 21,200.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,886.71 : 24,690.28 = 15,358.66 : x
  2. Step 2: Convert to fraction form
    17,886.71/24,690.28 = 15,358.66/x
  3. Step 3: Cross multiply
    17,886.71x = 24,690.28 × 15,358.66
  4. Step 4: Simplify right side
    17,886.71x = 379,209,515.70
  5. Step 5: Solve for x
    x = 379,209,515.70/17,886.71
  6. Step 6: Final answer
    x = 21,200.64

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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.