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Finding the Fourth Proportional to 524,039.80, 722,442.66 and 443,142.76

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Solution

The fourth proportional to 524,039.80, 722,442.66 and 443,142.76 is: 610,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,039.80 : 722,442.66 = 443,142.76 : x
  2. Step 2: Convert to fraction form
    524,039.80/722,442.66 = 443,142.76/x
  3. Step 3: Cross multiply
    524,039.80x = 722,442.66 × 443,142.76
  4. Step 4: Simplify right side
    524,039.80x = 320,145,234,294.14
  5. Step 5: Solve for x
    x = 320,145,234,294.14/524,039.80
  6. Step 6: Final answer
    x = 610,917.79

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Double scale
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Similar ratio
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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.