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Finding the Fourth Proportional to 639,195.96, 881,774.46 and 418,302.48

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Solution

The fourth proportional to 639,195.96, 881,774.46 and 418,302.48 is: 577,050.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,195.96 : 881,774.46 = 418,302.48 : x
  2. Step 2: Convert to fraction form
    639,195.96/881,774.46 = 418,302.48/x
  3. Step 3: Cross multiply
    639,195.96x = 881,774.46 × 418,302.48
  4. Step 4: Simplify right side
    639,195.96x = 368,848,443,418.66
  5. Step 5: Solve for x
    x = 368,848,443,418.66/639,195.96
  6. Step 6: Final answer
    x = 577,050.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.