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Finding the Fourth Proportional to 60,990.80, 91,486.20 and 36,042.80

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Solution

The fourth proportional to 60,990.80, 91,486.20 and 36,042.80 is: 54,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,990.80 : 91,486.20 = 36,042.80 : x
  2. Step 2: Convert to fraction form
    60,990.80/91,486.20 = 36,042.80/x
  3. Step 3: Cross multiply
    60,990.80x = 91,486.20 × 36,042.80
  4. Step 4: Simplify right side
    60,990.80x = 3,297,418,809.36
  5. Step 5: Solve for x
    x = 3,297,418,809.36/60,990.80
  6. Step 6: Final answer
    x = 54,064.20

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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.