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Finding the Fourth Proportional to 83,959.53, 115,833.72 and 47,639.94

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Solution

The fourth proportional to 83,959.53, 115,833.72 and 47,639.94 is: 65,725.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,959.53 : 115,833.72 = 47,639.94 : x
  2. Step 2: Convert to fraction form
    83,959.53/115,833.72 = 47,639.94/x
  3. Step 3: Cross multiply
    83,959.53x = 115,833.72 × 47,639.94
  4. Step 4: Simplify right side
    83,959.53x = 5,518,311,675.12
  5. Step 5: Solve for x
    x = 5,518,311,675.12/83,959.53
  6. Step 6: Final answer
    x = 65,725.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.