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Finding the Fourth Proportional to 19,487.89, 26,894.08 and 10,874.83

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Solution

The fourth proportional to 19,487.89, 26,894.08 and 10,874.83 is: 15,007.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487.89 : 26,894.08 = 10,874.83 : x
  2. Step 2: Convert to fraction form
    19,487.89/26,894.08 = 10,874.83/x
  3. Step 3: Cross multiply
    19,487.89x = 26,894.08 × 10,874.83
  4. Step 4: Simplify right side
    19,487.89x = 292,468,445.80
  5. Step 5: Solve for x
    x = 292,468,445.80/19,487.89
  6. Step 6: Final answer
    x = 15,007.70

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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.