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Finding the Fourth Proportional to 17,988.67, 26,985.30 and 9,657.26

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Solution

The fourth proportional to 17,988.67, 26,985.30 and 9,657.26 is: 14,487.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.67 : 26,985.30 = 9,657.26 : x
  2. Step 2: Convert to fraction form
    17,988.67/26,985.30 = 9,657.26/x
  3. Step 3: Cross multiply
    17,988.67x = 26,985.30 × 9,657.26
  4. Step 4: Simplify right side
    17,988.67x = 260,604,058.28
  5. Step 5: Solve for x
    x = 260,604,058.28/17,988.67
  6. Step 6: Final answer
    x = 14,487.12

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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.