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Finding the Fourth Proportional to 83,912.60, 125,868.90 and 46,587.80

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Solution

The fourth proportional to 83,912.60, 125,868.90 and 46,587.80 is: 69,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,912.60 : 125,868.90 = 46,587.80 : x
  2. Step 2: Convert to fraction form
    83,912.60/125,868.90 = 46,587.80/x
  3. Step 3: Cross multiply
    83,912.60x = 125,868.90 × 46,587.80
  4. Step 4: Simplify right side
    83,912.60x = 5,863,955,139.42
  5. Step 5: Solve for x
    x = 5,863,955,139.42/83,912.60
  6. Step 6: Final answer
    x = 69,881.70

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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.