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Finding the Fourth Proportional to 17,920.76, 26,877.51 and 17,031.60

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Solution

The fourth proportional to 17,920.76, 26,877.51 and 17,031.60 is: 25,543.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.76 : 26,877.51 = 17,031.60 : x
  2. Step 2: Convert to fraction form
    17,920.76/26,877.51 = 17,031.60/x
  3. Step 3: Cross multiply
    17,920.76x = 26,877.51 × 17,031.60
  4. Step 4: Simplify right side
    17,920.76x = 457,766,999.32
  5. Step 5: Solve for x
    x = 457,766,999.32/17,920.76
  6. Step 6: Final answer
    x = 25,543.96

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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.