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Finding the Fourth Proportional to 520,043.10, 780,064.65 and 441,311.10

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Solution

The fourth proportional to 520,043.10, 780,064.65 and 441,311.10 is: 661,966.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,043.10 : 780,064.65 = 441,311.10 : x
  2. Step 2: Convert to fraction form
    520,043.10/780,064.65 = 441,311.10/x
  3. Step 3: Cross multiply
    520,043.10x = 780,064.65 × 441,311.10
  4. Step 4: Simplify right side
    520,043.10x = 344,251,188,762.62
  5. Step 5: Solve for x
    x = 344,251,188,762.62/520,043.10
  6. Step 6: Final answer
    x = 661,966.65

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.