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Finding the Fourth Proportional to 636,059.72, 877,396.92 and 397,181

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Solution

The fourth proportional to 636,059.72, 877,396.92 and 397,181 is: 547,881.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,059.72 : 877,396.92 = 397,181 : x
  2. Step 2: Convert to fraction form
    636,059.72/877,396.92 = 397,181/x
  3. Step 3: Cross multiply
    636,059.72x = 877,396.92 × 397,181
  4. Step 4: Simplify right side
    636,059.72x = 348,485,386,082.52
  5. Step 5: Solve for x
    x = 348,485,386,082.52/636,059.72
  6. Step 6: Final answer
    x = 547,881.55

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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.