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Finding the Fourth Proportional to 61,885.59, 85,399.14 and 38,007.65

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Solution

The fourth proportional to 61,885.59, 85,399.14 and 38,007.65 is: 52,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,885.59 : 85,399.14 = 38,007.65 : x
  2. Step 2: Convert to fraction form
    61,885.59/85,399.14 = 38,007.65/x
  3. Step 3: Cross multiply
    61,885.59x = 85,399.14 × 38,007.65
  4. Step 4: Simplify right side
    61,885.59x = 3,245,820,599.04
  5. Step 5: Solve for x
    x = 3,245,820,599.04/61,885.59
  6. Step 6: Final answer
    x = 52,448.73

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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.