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Finding the Fourth Proportional to 425,156.40, 637,824.56 and 140,830.83

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Solution

The fourth proportional to 425,156.40, 637,824.56 and 140,830.83 is: 211,276.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,156.40 : 637,824.56 = 140,830.83 : x
  2. Step 2: Convert to fraction form
    425,156.40/637,824.56 = 140,830.83/x
  3. Step 3: Cross multiply
    425,156.40x = 637,824.56 × 140,830.83
  4. Step 4: Simplify right side
    425,156.40x = 89,825,361,475.03
  5. Step 5: Solve for x
    x = 89,825,361,475.03/425,156.40
  6. Step 6: Final answer
    x = 211,276.04

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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.