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Finding the Fourth Proportional to 85,235.60, 127,832.86 and 26,071.78

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Solution

The fourth proportional to 85,235.60, 127,832.86 and 26,071.78 is: 39,101.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,235.60 : 127,832.86 = 26,071.78 : x
  2. Step 2: Convert to fraction form
    85,235.60/127,832.86 = 26,071.78/x
  3. Step 3: Cross multiply
    85,235.60x = 127,832.86 × 26,071.78
  4. Step 4: Simplify right side
    85,235.60x = 3,332,829,433.17
  5. Step 5: Solve for x
    x = 3,332,829,433.17/85,235.60
  6. Step 6: Final answer
    x = 39,101.38

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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.