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Finding the Fourth Proportional to 38,949.80, 58,403.10 and 15,549.80

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Solution

The fourth proportional to 38,949.80, 58,403.10 and 15,549.80 is: 23,316.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,949.80 : 58,403.10 = 15,549.80 : x
  2. Step 2: Convert to fraction form
    38,949.80/58,403.10 = 15,549.80/x
  3. Step 3: Cross multiply
    38,949.80x = 58,403.10 × 15,549.80
  4. Step 4: Simplify right side
    38,949.80x = 908,156,524.38
  5. Step 5: Solve for x
    x = 908,156,524.38/38,949.80
  6. Step 6: Final answer
    x = 23,316.08

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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.