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Finding the Fourth Proportional to 66,879.59, 92,294.57 and 38,203.03

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Solution

The fourth proportional to 66,879.59, 92,294.57 and 38,203.03 is: 52,720.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,879.59 : 92,294.57 = 38,203.03 : x
  2. Step 2: Convert to fraction form
    66,879.59/92,294.57 = 38,203.03/x
  3. Step 3: Cross multiply
    66,879.59x = 92,294.57 × 38,203.03
  4. Step 4: Simplify right side
    66,879.59x = 3,525,932,437.42
  5. Step 5: Solve for x
    x = 3,525,932,437.42/66,879.59
  6. Step 6: Final answer
    x = 52,720.61

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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.