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Finding the Fourth Proportional to 17,798.68, 26,681.92 and 8,432.88

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Solution

The fourth proportional to 17,798.68, 26,681.92 and 8,432.88 is: 12,641.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,798.68 : 26,681.92 = 8,432.88 : x
  2. Step 2: Convert to fraction form
    17,798.68/26,681.92 = 8,432.88/x
  3. Step 3: Cross multiply
    17,798.68x = 26,681.92 × 8,432.88
  4. Step 4: Simplify right side
    17,798.68x = 225,005,429.53
  5. Step 5: Solve for x
    x = 225,005,429.53/17,798.68
  6. Step 6: Final answer
    x = 12,641.69

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1.5x scale

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.