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Finding the Fourth Proportional to 66,673.52, 92,019.12 and 38,378.96

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Solution

The fourth proportional to 66,673.52, 92,019.12 and 38,378.96 is: 52,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,673.52 : 92,019.12 = 38,378.96 : x
  2. Step 2: Convert to fraction form
    66,673.52/92,019.12 = 38,378.96/x
  3. Step 3: Cross multiply
    66,673.52x = 92,019.12 × 38,378.96
  4. Step 4: Simplify right side
    66,673.52x = 3,531,598,125.72
  5. Step 5: Solve for x
    x = 3,531,598,125.72/66,673.52
  6. Step 6: Final answer
    x = 52,968.53

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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.