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Finding the Fourth Proportional to 17,699.61, 26,565.82 and 8,940.68

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Solution

The fourth proportional to 17,699.61, 26,565.82 and 8,940.68 is: 13,419.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,699.61 : 26,565.82 = 8,940.68 : x
  2. Step 2: Convert to fraction form
    17,699.61/26,565.82 = 8,940.68/x
  3. Step 3: Cross multiply
    17,699.61x = 26,565.82 × 8,940.68
  4. Step 4: Simplify right side
    17,699.61x = 237,516,490.29
  5. Step 5: Solve for x
    x = 237,516,490.29/17,699.61
  6. Step 6: Final answer
    x = 13,419.30

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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.