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Finding the Fourth Proportional to 278,691.36, 384,753.42 and 183,474.85

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Solution

The fourth proportional to 278,691.36, 384,753.42 and 183,474.85 is: 253,300.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,691.36 : 384,753.42 = 183,474.85 : x
  2. Step 2: Convert to fraction form
    278,691.36/384,753.42 = 183,474.85/x
  3. Step 3: Cross multiply
    278,691.36x = 384,753.42 × 183,474.85
  4. Step 4: Simplify right side
    278,691.36x = 70,592,575,059.60
  5. Step 5: Solve for x
    x = 70,592,575,059.60/278,691.36
  6. Step 6: Final answer
    x = 253,300.19

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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.