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Finding the Fourth Proportional to 29,325.67, 43,987.89 and 7,139.17

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Solution

The fourth proportional to 29,325.67, 43,987.89 and 7,139.17 is: 10,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,325.67 : 43,987.89 = 7,139.17 : x
  2. Step 2: Convert to fraction form
    29,325.67/43,987.89 = 7,139.17/x
  3. Step 3: Cross multiply
    29,325.67x = 43,987.89 × 7,139.17
  4. Step 4: Simplify right side
    29,325.67x = 314,037,024.65
  5. Step 5: Solve for x
    x = 314,037,024.65/29,325.67
  6. Step 6: Final answer
    x = 10,708.61

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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.