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Finding the Fourth Proportional to 18,648.60, 25,737.48 and 10,693.68

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Solution

The fourth proportional to 18,648.60, 25,737.48 and 10,693.68 is: 14,758.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648.60 : 25,737.48 = 10,693.68 : x
  2. Step 2: Convert to fraction form
    18,648.60/25,737.48 = 10,693.68/x
  3. Step 3: Cross multiply
    18,648.60x = 25,737.48 × 10,693.68
  4. Step 4: Simplify right side
    18,648.60x = 275,228,375.13
  5. Step 5: Solve for x
    x = 275,228,375.13/18,648.60
  6. Step 6: Final answer
    x = 14,758.66

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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.