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Finding the Fourth Proportional to 71,868.66, 99,214.92 and 55,699.98

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Solution

The fourth proportional to 71,868.66, 99,214.92 and 55,699.98 is: 76,894.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,868.66 : 99,214.92 = 55,699.98 : x
  2. Step 2: Convert to fraction form
    71,868.66/99,214.92 = 55,699.98/x
  3. Step 3: Cross multiply
    71,868.66x = 99,214.92 × 55,699.98
  4. Step 4: Simplify right side
    71,868.66x = 5,526,269,059.70
  5. Step 5: Solve for x
    x = 5,526,269,059.70/71,868.66
  6. Step 6: Final answer
    x = 76,894.00

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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.