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Finding the Fourth Proportional to 516,691.95, 775,059.53 and 276,705.15

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Solution

The fourth proportional to 516,691.95, 775,059.53 and 276,705.15 is: 415,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,691.95 : 775,059.53 = 276,705.15 : x
  2. Step 2: Convert to fraction form
    516,691.95/775,059.53 = 276,705.15/x
  3. Step 3: Cross multiply
    516,691.95x = 775,059.53 × 276,705.15
  4. Step 4: Simplify right side
    516,691.95x = 214,462,962,124.05
  5. Step 5: Solve for x
    x = 214,462,962,124.05/516,691.95
  6. Step 6: Final answer
    x = 415,069.29

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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.