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Finding the Fourth Proportional to 60,658.71, 90,996.57 and 21,206.85

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Solution

The fourth proportional to 60,658.71, 90,996.57 and 21,206.85 is: 31,813.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,658.71 : 90,996.57 = 21,206.85 : x
  2. Step 2: Convert to fraction form
    60,658.71/90,996.57 = 21,206.85/x
  3. Step 3: Cross multiply
    60,658.71x = 90,996.57 × 21,206.85
  4. Step 4: Simplify right side
    60,658.71x = 1,929,750,610.50
  5. Step 5: Solve for x
    x = 1,929,750,610.50/60,658.71
  6. Step 6: Final answer
    x = 31,813.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.