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Finding the Fourth Proportional to 8,658.18, 11,951.01 and 5,970.78

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Solution

The fourth proportional to 8,658.18, 11,951.01 and 5,970.78 is: 8,241.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.18 : 11,951.01 = 5,970.78 : x
  2. Step 2: Convert to fraction form
    8,658.18/11,951.01 = 5,970.78/x
  3. Step 3: Cross multiply
    8,658.18x = 11,951.01 × 5,970.78
  4. Step 4: Simplify right side
    8,658.18x = 71,356,851.49
  5. Step 5: Solve for x
    x = 71,356,851.49/8,658.18
  6. Step 6: Final answer
    x = 8,241.55

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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.