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Finding the Fourth Proportional to 527,205.60, 791,333.28 and 290,659.68

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Solution

The fourth proportional to 527,205.60, 791,333.28 and 290,659.68 is: 436,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,205.60 : 791,333.28 = 290,659.68 : x
  2. Step 2: Convert to fraction form
    527,205.60/791,333.28 = 290,659.68/x
  3. Step 3: Cross multiply
    527,205.60x = 791,333.28 × 290,659.68
  4. Step 4: Simplify right side
    527,205.60x = 230,008,677,938.15
  5. Step 5: Solve for x
    x = 230,008,677,938.15/527,205.60
  6. Step 6: Final answer
    x = 436,278.90

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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.