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Finding the Fourth Proportional to 521,040.60, 779,228.10 and 437,059.80

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Solution

The fourth proportional to 521,040.60, 779,228.10 and 437,059.80 is: 653,632.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,040.60 : 779,228.10 = 437,059.80 : x
  2. Step 2: Convert to fraction form
    521,040.60/779,228.10 = 437,059.80/x
  3. Step 3: Cross multiply
    521,040.60x = 779,228.10 × 437,059.80
  4. Step 4: Simplify right side
    521,040.60x = 340,569,277,540.38
  5. Step 5: Solve for x
    x = 340,569,277,540.38/521,040.60
  6. Step 6: Final answer
    x = 653,632.90

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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.