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Finding the Fourth Proportional to 354,734.60, 532,101.90 and 105,416.60

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Solution

The fourth proportional to 354,734.60, 532,101.90 and 105,416.60 is: 158,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,734.60 : 532,101.90 = 105,416.60 : x
  2. Step 2: Convert to fraction form
    354,734.60/532,101.90 = 105,416.60/x
  3. Step 3: Cross multiply
    354,734.60x = 532,101.90 × 105,416.60
  4. Step 4: Simplify right side
    354,734.60x = 56,092,373,151.54
  5. Step 5: Solve for x
    x = 56,092,373,151.54/354,734.60
  6. Step 6: Final answer
    x = 158,124.90

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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.