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Finding the Fourth Proportional to 25,710.60, 38,565.90 and 9,089.40

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Solution

The fourth proportional to 25,710.60, 38,565.90 and 9,089.40 is: 13,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,710.60 : 38,565.90 = 9,089.40 : x
  2. Step 2: Convert to fraction form
    25,710.60/38,565.90 = 9,089.40/x
  3. Step 3: Cross multiply
    25,710.60x = 38,565.90 × 9,089.40
  4. Step 4: Simplify right side
    25,710.60x = 350,540,891.46
  5. Step 5: Solve for x
    x = 350,540,891.46/25,710.60
  6. Step 6: Final answer
    x = 13,634.10

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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.