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Finding the Fourth Proportional to 363,981.60, 545,875.20 and 111,261.60

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Solution

The fourth proportional to 363,981.60, 545,875.20 and 111,261.60 is: 166,862.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,981.60 : 545,875.20 = 111,261.60 : x
  2. Step 2: Convert to fraction form
    363,981.60/545,875.20 = 111,261.60/x
  3. Step 3: Cross multiply
    363,981.60x = 545,875.20 × 111,261.60
  4. Step 4: Simplify right side
    363,981.60x = 60,734,948,152.32
  5. Step 5: Solve for x
    x = 60,734,948,152.32/363,981.60
  6. Step 6: Final answer
    x = 166,862.69

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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.