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Finding the Fourth Proportional to 66,785.58, 92,174.22 and 38,105.10

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Solution

The fourth proportional to 66,785.58, 92,174.22 and 38,105.10 is: 52,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,785.58 : 92,174.22 = 38,105.10 : x
  2. Step 2: Convert to fraction form
    66,785.58/92,174.22 = 38,105.10/x
  3. Step 3: Cross multiply
    66,785.58x = 92,174.22 × 38,105.10
  4. Step 4: Simplify right side
    66,785.58x = 3,512,307,870.52
  5. Step 5: Solve for x
    x = 3,512,307,870.52/66,785.58
  6. Step 6: Final answer
    x = 52,590.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.