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Finding the Fourth Proportional to 111,586.62, 153,988.11 and 61,282.38

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Solution

The fourth proportional to 111,586.62, 153,988.11 and 61,282.38 is: 84,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,586.62 : 153,988.11 = 61,282.38 : x
  2. Step 2: Convert to fraction form
    111,586.62/153,988.11 = 61,282.38/x
  3. Step 3: Cross multiply
    111,586.62x = 153,988.11 × 61,282.38
  4. Step 4: Simplify right side
    111,586.62x = 9,436,757,872.50
  5. Step 5: Solve for x
    x = 9,436,757,872.50/111,586.62
  6. Step 6: Final answer
    x = 84,568.90

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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.