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Finding the Fourth Proportional to 72,503.28, 100,055.52 and 43,819.02

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Solution

The fourth proportional to 72,503.28, 100,055.52 and 43,819.02 is: 60,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,503.28 : 100,055.52 = 43,819.02 : x
  2. Step 2: Convert to fraction form
    72,503.28/100,055.52 = 43,819.02/x
  3. Step 3: Cross multiply
    72,503.28x = 100,055.52 × 43,819.02
  4. Step 4: Simplify right side
    72,503.28x = 4,384,334,831.99
  5. Step 5: Solve for x
    x = 4,384,334,831.99/72,503.28
  6. Step 6: Final answer
    x = 60,470.85

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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.