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Finding the Fourth Proportional to 72,830.88, 100,510.20 and 41,003.28

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Solution

The fourth proportional to 72,830.88, 100,510.20 and 41,003.28 is: 56,586.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,830.88 : 100,510.20 = 41,003.28 : x
  2. Step 2: Convert to fraction form
    72,830.88/100,510.20 = 41,003.28/x
  3. Step 3: Cross multiply
    72,830.88x = 100,510.20 × 41,003.28
  4. Step 4: Simplify right side
    72,830.88x = 4,121,247,873.46
  5. Step 5: Solve for x
    x = 4,121,247,873.46/72,830.88
  6. Step 6: Final answer
    x = 56,586.55

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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.