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Finding the Fourth Proportional to 17,312.64, 23,891.43 and 9,354.87

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Solution

The fourth proportional to 17,312.64, 23,891.43 and 9,354.87 is: 12,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,312.64 : 23,891.43 = 9,354.87 : x
  2. Step 2: Convert to fraction form
    17,312.64/23,891.43 = 9,354.87/x
  3. Step 3: Cross multiply
    17,312.64x = 23,891.43 × 9,354.87
  4. Step 4: Simplify right side
    17,312.64x = 223,501,221.76
  5. Step 5: Solve for x
    x = 223,501,221.76/17,312.64
  6. Step 6: Final answer
    x = 12,909.71

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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.