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Finding the Fourth Proportional to 85,211.60, 127,806.20 and 26,053.20

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Solution

The fourth proportional to 85,211.60, 127,806.20 and 26,053.20 is: 39,076.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211.60 : 127,806.20 = 26,053.20 : x
  2. Step 2: Convert to fraction form
    85,211.60/127,806.20 = 26,053.20/x
  3. Step 3: Cross multiply
    85,211.60x = 127,806.20 × 26,053.20
  4. Step 4: Simplify right side
    85,211.60x = 3,329,760,489.84
  5. Step 5: Solve for x
    x = 3,329,760,489.84/85,211.60
  6. Step 6: Final answer
    x = 39,076.38

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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.