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Finding the Fourth Proportional to 38,466.56, 57,710.56 and 12,170.56

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Solution

The fourth proportional to 38,466.56, 57,710.56 and 12,170.56 is: 18,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,466.56 : 57,710.56 = 12,170.56 : x
  2. Step 2: Convert to fraction form
    38,466.56/57,710.56 = 12,170.56/x
  3. Step 3: Cross multiply
    38,466.56x = 57,710.56 × 12,170.56
  4. Step 4: Simplify right side
    38,466.56x = 702,369,833.11
  5. Step 5: Solve for x
    x = 702,369,833.11/38,466.56
  6. Step 6: Final answer
    x = 18,259.23

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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.