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Finding the Fourth Proportional to 38,666.30, 57,999.45 and 18,983.30

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Solution

The fourth proportional to 38,666.30, 57,999.45 and 18,983.30 is: 28,474.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,666.30 : 57,999.45 = 18,983.30 : x
  2. Step 2: Convert to fraction form
    38,666.30/57,999.45 = 18,983.30/x
  3. Step 3: Cross multiply
    38,666.30x = 57,999.45 × 18,983.30
  4. Step 4: Simplify right side
    38,666.30x = 1,101,020,959.19
  5. Step 5: Solve for x
    x = 1,101,020,959.19/38,666.30
  6. Step 6: Final answer
    x = 28,474.95

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Similar ratio
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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.