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Finding the Fourth Proportional to 72,797.55, 100,461.61 and 42,600.54

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Solution

The fourth proportional to 72,797.55, 100,461.61 and 42,600.54 is: 58,789.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,797.55 : 100,461.61 = 42,600.54 : x
  2. Step 2: Convert to fraction form
    72,797.55/100,461.61 = 42,600.54/x
  3. Step 3: Cross multiply
    72,797.55x = 100,461.61 × 42,600.54
  4. Step 4: Simplify right side
    72,797.55x = 4,279,718,835.27
  5. Step 5: Solve for x
    x = 4,279,718,835.27/72,797.55
  6. Step 6: Final answer
    x = 58,789.33

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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.