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Finding the Fourth Proportional to 85,608.68, 128,296.36 and 41,232.20

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Solution

The fourth proportional to 85,608.68, 128,296.36 and 41,232.20 is: 61,792.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,608.68 : 128,296.36 = 41,232.20 : x
  2. Step 2: Convert to fraction form
    85,608.68/128,296.36 = 41,232.20/x
  3. Step 3: Cross multiply
    85,608.68x = 128,296.36 × 41,232.20
  4. Step 4: Simplify right side
    85,608.68x = 5,289,941,174.79
  5. Step 5: Solve for x
    x = 5,289,941,174.79/85,608.68
  6. Step 6: Final answer
    x = 61,792.11

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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.