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Finding the Fourth Proportional to 85,993.92, 128,999.04 and 33,407.52

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Solution

The fourth proportional to 85,993.92, 128,999.04 and 33,407.52 is: 50,114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,993.92 : 128,999.04 = 33,407.52 : x
  2. Step 2: Convert to fraction form
    85,993.92/128,999.04 = 33,407.52/x
  3. Step 3: Cross multiply
    85,993.92x = 128,999.04 × 33,407.52
  4. Step 4: Simplify right side
    85,993.92x = 4,309,538,008.78
  5. Step 5: Solve for x
    x = 4,309,538,008.78/85,993.92
  6. Step 6: Final answer
    x = 50,114.45

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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.