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Finding the Fourth Proportional to 85,305.67, 127,854.73 and 60,352.91

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Solution

The fourth proportional to 85,305.67, 127,854.73 and 60,352.91 is: 90,455.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,305.67 : 127,854.73 = 60,352.91 : x
  2. Step 2: Convert to fraction form
    85,305.67/127,854.73 = 60,352.91/x
  3. Step 3: Cross multiply
    85,305.67x = 127,854.73 × 60,352.91
  4. Step 4: Simplify right side
    85,305.67x = 7,716,404,928.39
  5. Step 5: Solve for x
    x = 7,716,404,928.39/85,305.67
  6. Step 6: Final answer
    x = 90,455.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.