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Finding the Fourth Proportional to 56,853.90, 85,280.85 and 15,300.90

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Solution

The fourth proportional to 56,853.90, 85,280.85 and 15,300.90 is: 22,951.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,853.90 : 85,280.85 = 15,300.90 : x
  2. Step 2: Convert to fraction form
    56,853.90/85,280.85 = 15,300.90/x
  3. Step 3: Cross multiply
    56,853.90x = 85,280.85 × 15,300.90
  4. Step 4: Simplify right side
    56,853.90x = 1,304,873,757.77
  5. Step 5: Solve for x
    x = 1,304,873,757.77/56,853.90
  6. Step 6: Final answer
    x = 22,951.35

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Similar ratio
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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.