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Finding the Fourth Proportional to 71,041.79, 98,025.95 and 40,820.70

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Solution

The fourth proportional to 71,041.79, 98,025.95 and 40,820.70 is: 56,325.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,041.79 : 98,025.95 = 40,820.70 : x
  2. Step 2: Convert to fraction form
    71,041.79/98,025.95 = 40,820.70/x
  3. Step 3: Cross multiply
    71,041.79x = 98,025.95 × 40,820.70
  4. Step 4: Simplify right side
    71,041.79x = 4,001,487,706.27
  5. Step 5: Solve for x
    x = 4,001,487,706.27/71,041.79
  6. Step 6: Final answer
    x = 56,325.83

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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.