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Finding the Fourth Proportional to 392,587.53, 541,770.90 and 220,505.76

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Solution

The fourth proportional to 392,587.53, 541,770.90 and 220,505.76 is: 304,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,587.53 : 541,770.90 = 220,505.76 : x
  2. Step 2: Convert to fraction form
    392,587.53/541,770.90 = 220,505.76/x
  3. Step 3: Cross multiply
    392,587.53x = 541,770.90 × 220,505.76
  4. Step 4: Simplify right side
    392,587.53x = 119,463,604,050.38
  5. Step 5: Solve for x
    x = 119,463,604,050.38/392,587.53
  6. Step 6: Final answer
    x = 304,298.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.