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Finding the Fourth Proportional to 66,921.48, 92,350.86 and 36,294.12

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Solution

The fourth proportional to 66,921.48, 92,350.86 and 36,294.12 is: 50,085.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,921.48 : 92,350.86 = 36,294.12 : x
  2. Step 2: Convert to fraction form
    66,921.48/92,350.86 = 36,294.12/x
  3. Step 3: Cross multiply
    66,921.48x = 92,350.86 × 36,294.12
  4. Step 4: Simplify right side
    66,921.48x = 3,351,793,194.94
  5. Step 5: Solve for x
    x = 3,351,793,194.94/66,921.48
  6. Step 6: Final answer
    x = 50,085.46

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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.