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Finding the Fourth Proportional to 527,999.40, 791,415.90 and 291,511.80

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Solution

The fourth proportional to 527,999.40, 791,415.90 and 291,511.80 is: 436,945.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,999.40 : 791,415.90 = 291,511.80 : x
  2. Step 2: Convert to fraction form
    527,999.40/791,415.90 = 291,511.80/x
  3. Step 3: Cross multiply
    527,999.40x = 791,415.90 × 291,511.80
  4. Step 4: Simplify right side
    527,999.40x = 230,707,073,557.62
  5. Step 5: Solve for x
    x = 230,707,073,557.62/527,999.40
  6. Step 6: Final answer
    x = 436,945.71

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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.