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Finding the Fourth Proportional to 16,938.72, 25,407.72 and 9,043.92

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Solution

The fourth proportional to 16,938.72, 25,407.72 and 9,043.92 is: 13,565.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,938.72 : 25,407.72 = 9,043.92 : x
  2. Step 2: Convert to fraction form
    16,938.72/25,407.72 = 9,043.92/x
  3. Step 3: Cross multiply
    16,938.72x = 25,407.72 × 9,043.92
  4. Step 4: Simplify right side
    16,938.72x = 229,785,387.06
  5. Step 5: Solve for x
    x = 229,785,387.06/16,938.72
  6. Step 6: Final answer
    x = 13,565.69

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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.