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Finding the Fourth Proportional to 38,868.80, 58,432.80 and 33,166.40

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Solution

The fourth proportional to 38,868.80, 58,432.80 and 33,166.40 is: 49,860.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,868.80 : 58,432.80 = 33,166.40 : x
  2. Step 2: Convert to fraction form
    38,868.80/58,432.80 = 33,166.40/x
  3. Step 3: Cross multiply
    38,868.80x = 58,432.80 × 33,166.40
  4. Step 4: Simplify right side
    38,868.80x = 1,938,005,617.92
  5. Step 5: Solve for x
    x = 1,938,005,617.92/38,868.80
  6. Step 6: Final answer
    x = 49,860.19

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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.