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Finding the Fourth Proportional to 876,493.98, 1,315,486.98 and 344,387.16

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Solution

The fourth proportional to 876,493.98, 1,315,486.98 and 344,387.16 is: 516,873.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,493.98 : 1,315,486.98 = 344,387.16 : x
  2. Step 2: Convert to fraction form
    876,493.98/1,315,486.98 = 344,387.16/x
  3. Step 3: Cross multiply
    876,493.98x = 1,315,486.98 × 344,387.16
  4. Step 4: Simplify right side
    876,493.98x = 453,036,825,059.18
  5. Step 5: Solve for x
    x = 453,036,825,059.18/876,493.98
  6. Step 6: Final answer
    x = 516,873.86

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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.