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Finding the Fourth Proportional to 74,251.80, 111,377.70 and 34,885.80

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Solution

The fourth proportional to 74,251.80, 111,377.70 and 34,885.80 is: 52,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,251.80 : 111,377.70 = 34,885.80 : x
  2. Step 2: Convert to fraction form
    74,251.80/111,377.70 = 34,885.80/x
  3. Step 3: Cross multiply
    74,251.80x = 111,377.70 × 34,885.80
  4. Step 4: Simplify right side
    74,251.80x = 3,885,500,166.66
  5. Step 5: Solve for x
    x = 3,885,500,166.66/74,251.80
  6. Step 6: Final answer
    x = 52,328.70

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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.