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Finding the Fourth Proportional to 78,699.99, 118,084.85 and 41,251.16

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Solution

The fourth proportional to 78,699.99, 118,084.85 and 41,251.16 is: 61,895.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,699.99 : 118,084.85 = 41,251.16 : x
  2. Step 2: Convert to fraction form
    78,699.99/118,084.85 = 41,251.16/x
  3. Step 3: Cross multiply
    78,699.99x = 118,084.85 × 41,251.16
  4. Step 4: Simplify right side
    78,699.99x = 4,871,137,439.27
  5. Step 5: Solve for x
    x = 4,871,137,439.27/78,699.99
  6. Step 6: Final answer
    x = 61,895.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.