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Finding the Fourth Proportional to 72,818.55, 100,465.56 and 59,366.68

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Solution

The fourth proportional to 72,818.55, 100,465.56 and 59,366.68 is: 81,906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,818.55 : 100,465.56 = 59,366.68 : x
  2. Step 2: Convert to fraction form
    72,818.55/100,465.56 = 59,366.68/x
  3. Step 3: Cross multiply
    72,818.55x = 100,465.56 × 59,366.68
  4. Step 4: Simplify right side
    72,818.55x = 5,964,306,471.84
  5. Step 5: Solve for x
    x = 5,964,306,471.84/72,818.55
  6. Step 6: Final answer
    x = 81,906.42

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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.