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Finding the Fourth Proportional to 355,439.60, 532,468.20 and 197,385.20

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Solution

The fourth proportional to 355,439.60, 532,468.20 and 197,385.20 is: 295,693.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,439.60 : 532,468.20 = 197,385.20 : x
  2. Step 2: Convert to fraction form
    355,439.60/532,468.20 = 197,385.20/x
  3. Step 3: Cross multiply
    355,439.60x = 532,468.20 × 197,385.20
  4. Step 4: Simplify right side
    355,439.60x = 105,101,342,150.64
  5. Step 5: Solve for x
    x = 105,101,342,150.64/355,439.60
  6. Step 6: Final answer
    x = 295,693.96

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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.