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Finding the Fourth Proportional to 521,253.60, 783,046.80 and 499,999.20

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Solution

The fourth proportional to 521,253.60, 783,046.80 and 499,999.20 is: 751,117.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,253.60 : 783,046.80 = 499,999.20 : x
  2. Step 2: Convert to fraction form
    521,253.60/783,046.80 = 499,999.20/x
  3. Step 3: Cross multiply
    521,253.60x = 783,046.80 × 499,999.20
  4. Step 4: Simplify right side
    521,253.60x = 391,522,773,562.56
  5. Step 5: Solve for x
    x = 391,522,773,562.56/521,253.60
  6. Step 6: Final answer
    x = 751,117.64

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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.