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Finding the Fourth Proportional to 22,987.70, 34,481.55 and 9,136.70

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Solution

The fourth proportional to 22,987.70, 34,481.55 and 9,136.70 is: 13,705.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,987.70 : 34,481.55 = 9,136.70 : x
  2. Step 2: Convert to fraction form
    22,987.70/34,481.55 = 9,136.70/x
  3. Step 3: Cross multiply
    22,987.70x = 34,481.55 × 9,136.70
  4. Step 4: Simplify right side
    22,987.70x = 315,047,577.89
  5. Step 5: Solve for x
    x = 315,047,577.89/22,987.70
  6. Step 6: Final answer
    x = 13,705.05

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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.