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Finding the Fourth Proportional to 527,999.90, 791,805.45 and 261,671.90

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Solution

The fourth proportional to 527,999.90, 791,805.45 and 261,671.90 is: 392,411.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,999.90 : 791,805.45 = 261,671.90 : x
  2. Step 2: Convert to fraction form
    527,999.90/791,805.45 = 261,671.90/x
  3. Step 3: Cross multiply
    527,999.90x = 791,805.45 × 261,671.90
  4. Step 4: Simplify right side
    527,999.90x = 207,193,236,531.86
  5. Step 5: Solve for x
    x = 207,193,236,531.86/527,999.90
  6. Step 6: Final answer
    x = 392,411.51

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1.5x scale

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.