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Finding the Fourth Proportional to 85,896.29, 128,844.42 and 50,411.60

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Solution

The fourth proportional to 85,896.29, 128,844.42 and 50,411.60 is: 75,617.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,896.29 : 128,844.42 = 50,411.60 : x
  2. Step 2: Convert to fraction form
    85,896.29/128,844.42 = 50,411.60/x
  3. Step 3: Cross multiply
    85,896.29x = 128,844.42 × 50,411.60
  4. Step 4: Simplify right side
    85,896.29x = 6,495,253,363.27
  5. Step 5: Solve for x
    x = 6,495,253,363.27/85,896.29
  6. Step 6: Final answer
    x = 75,617.40

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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.