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Finding the Fourth Proportional to 85,833.80, 128,787.15 and 41,437.70

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Solution

The fourth proportional to 85,833.80, 128,787.15 and 41,437.70 is: 62,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,833.80 : 128,787.15 = 41,437.70 : x
  2. Step 2: Convert to fraction form
    85,833.80/128,787.15 = 41,437.70/x
  3. Step 3: Cross multiply
    85,833.80x = 128,787.15 × 41,437.70
  4. Step 4: Simplify right side
    85,833.80x = 5,336,643,285.56
  5. Step 5: Solve for x
    x = 5,336,643,285.56/85,833.80
  6. Step 6: Final answer
    x = 62,174.15

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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.