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Finding the Fourth Proportional to 260,531.70, 390,608.55 and 176,082.90

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Solution

The fourth proportional to 260,531.70, 390,608.55 and 176,082.90 is: 263,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,531.70 : 390,608.55 = 176,082.90 : x
  2. Step 2: Convert to fraction form
    260,531.70/390,608.55 = 176,082.90/x
  3. Step 3: Cross multiply
    260,531.70x = 390,608.55 × 176,082.90
  4. Step 4: Simplify right side
    260,531.70x = 68,779,486,248.80
  5. Step 5: Solve for x
    x = 68,779,486,248.80/260,531.70
  6. Step 6: Final answer
    x = 263,996.61

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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.