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Finding the Fourth Proportional to 471,330.96, 707,107.15 and 155,787.86

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Solution

The fourth proportional to 471,330.96, 707,107.15 and 155,787.86 is: 233,718.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,330.96 : 707,107.15 = 155,787.86 : x
  2. Step 2: Convert to fraction form
    471,330.96/707,107.15 = 155,787.86/x
  3. Step 3: Cross multiply
    471,330.96x = 707,107.15 × 155,787.86
  4. Step 4: Simplify right side
    471,330.96x = 110,158,709,689.20
  5. Step 5: Solve for x
    x = 110,158,709,689.20/471,330.96
  6. Step 6: Final answer
    x = 233,718.38

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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.