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Finding the Fourth Proportional to 339,691.50, 469,253.91 and 272,156.94

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Solution

The fourth proportional to 339,691.50, 469,253.91 and 272,156.94 is: 375,960.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,691.50 : 469,253.91 = 272,156.94 : x
  2. Step 2: Convert to fraction form
    339,691.50/469,253.91 = 272,156.94/x
  3. Step 3: Cross multiply
    339,691.50x = 469,253.91 × 272,156.94
  4. Step 4: Simplify right side
    339,691.50x = 127,710,708,228.64
  5. Step 5: Solve for x
    x = 127,710,708,228.64/339,691.50
  6. Step 6: Final answer
    x = 375,960.86

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1.5x scale

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.