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Finding the Fourth Proportional to 71,203.80, 98,341.96 and 48,503.42

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Solution

The fourth proportional to 71,203.80, 98,341.96 and 48,503.42 is: 66,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,203.80 : 98,341.96 = 48,503.42 : x
  2. Step 2: Convert to fraction form
    71,203.80/98,341.96 = 48,503.42/x
  3. Step 3: Cross multiply
    71,203.80x = 98,341.96 × 48,503.42
  4. Step 4: Simplify right side
    71,203.80x = 4,769,921,389.50
  5. Step 5: Solve for x
    x = 4,769,921,389.50/71,203.80
  6. Step 6: Final answer
    x = 66,989.70

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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.