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Finding the Fourth Proportional to 66,807, 92,198.90 and 38,120.04

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Solution

The fourth proportional to 66,807, 92,198.90 and 38,120.04 is: 52,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,807 : 92,198.90 = 38,120.04 : x
  2. Step 2: Convert to fraction form
    66,807/92,198.90 = 38,120.04/x
  3. Step 3: Cross multiply
    66,807x = 92,198.90 × 38,120.04
  4. Step 4: Simplify right side
    66,807x = 3,514,625,851.26
  5. Step 5: Solve for x
    x = 3,514,625,851.26/66,807
  6. Step 6: Final answer
    x = 52,608.65

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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.