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Finding the Fourth Proportional to 71,611.87, 98,827.19 and 48,998.29

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Solution

The fourth proportional to 71,611.87, 98,827.19 and 48,998.29 is: 67,619.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,611.87 : 98,827.19 = 48,998.29 : x
  2. Step 2: Convert to fraction form
    71,611.87/98,827.19 = 48,998.29/x
  3. Step 3: Cross multiply
    71,611.87x = 98,827.19 × 48,998.29
  4. Step 4: Simplify right side
    71,611.87x = 4,842,363,070.51
  5. Step 5: Solve for x
    x = 4,842,363,070.51/71,611.87
  6. Step 6: Final answer
    x = 67,619.56

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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.