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Finding the Fourth Proportional to 66,948.27, 92,372.31 and 38,653.89

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Solution

The fourth proportional to 66,948.27, 92,372.31 and 38,653.89 is: 53,332.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,948.27 : 92,372.31 = 38,653.89 : x
  2. Step 2: Convert to fraction form
    66,948.27/92,372.31 = 38,653.89/x
  3. Step 3: Cross multiply
    66,948.27x = 92,372.31 × 38,653.89
  4. Step 4: Simplify right side
    66,948.27x = 3,570,549,109.79
  5. Step 5: Solve for x
    x = 3,570,549,109.79/66,948.27
  6. Step 6: Final answer
    x = 53,332.96

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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.