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Finding the Fourth Proportional to 14,686.96, 20,259.52 and 9,375.79

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Solution

The fourth proportional to 14,686.96, 20,259.52 and 9,375.79 is: 12,933.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,686.96 : 20,259.52 = 9,375.79 : x
  2. Step 2: Convert to fraction form
    14,686.96/20,259.52 = 9,375.79/x
  3. Step 3: Cross multiply
    14,686.96x = 20,259.52 × 9,375.79
  4. Step 4: Simplify right side
    14,686.96x = 189,948,930.93
  5. Step 5: Solve for x
    x = 189,948,930.93/14,686.96
  6. Step 6: Final answer
    x = 12,933.17

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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.