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Finding the Fourth Proportional to 66,410.80, 99,616.20 and 48,696.10

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Solution

The fourth proportional to 66,410.80, 99,616.20 and 48,696.10 is: 73,044.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,410.80 : 99,616.20 = 48,696.10 : x
  2. Step 2: Convert to fraction form
    66,410.80/99,616.20 = 48,696.10/x
  3. Step 3: Cross multiply
    66,410.80x = 99,616.20 × 48,696.10
  4. Step 4: Simplify right side
    66,410.80x = 4,850,920,436.82
  5. Step 5: Solve for x
    x = 4,850,920,436.82/66,410.80
  6. Step 6: Final answer
    x = 73,044.15

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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.