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Finding the Fourth Proportional to 316,774.95, 437,148.14 and 173,543.91

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Solution

The fourth proportional to 316,774.95, 437,148.14 and 173,543.91 is: 239,489.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,774.95 : 437,148.14 = 173,543.91 : x
  2. Step 2: Convert to fraction form
    316,774.95/437,148.14 = 173,543.91/x
  3. Step 3: Cross multiply
    316,774.95x = 437,148.14 × 173,543.91
  4. Step 4: Simplify right side
    316,774.95x = 75,864,396,597.11
  5. Step 5: Solve for x
    x = 75,864,396,597.11/316,774.95
  6. Step 6: Final answer
    x = 239,489.89

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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.