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Finding the Fourth Proportional to 38,654.32, 57,986.95 and 12,352.91

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Solution

The fourth proportional to 38,654.32, 57,986.95 and 12,352.91 is: 18,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,654.32 : 57,986.95 = 12,352.91 : x
  2. Step 2: Convert to fraction form
    38,654.32/57,986.95 = 12,352.91/x
  3. Step 3: Cross multiply
    38,654.32x = 57,986.95 × 12,352.91
  4. Step 4: Simplify right side
    38,654.32x = 716,307,574.52
  5. Step 5: Solve for x
    x = 716,307,574.52/38,654.32
  6. Step 6: Final answer
    x = 18,531.11

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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.