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Finding the Fourth Proportional to 29,442.78, 44,164.20 and 11,912.76

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Solution

The fourth proportional to 29,442.78, 44,164.20 and 11,912.76 is: 17,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,442.78 : 44,164.20 = 11,912.76 : x
  2. Step 2: Convert to fraction form
    29,442.78/44,164.20 = 11,912.76/x
  3. Step 3: Cross multiply
    29,442.78x = 44,164.20 × 11,912.76
  4. Step 4: Simplify right side
    29,442.78x = 526,117,515.19
  5. Step 5: Solve for x
    x = 526,117,515.19/29,442.78
  6. Step 6: Final answer
    x = 17,869.15

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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.