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Finding the Fourth Proportional to 8,168,661.60, 12,255,616.80 and 5,476,027.20

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Solution

The fourth proportional to 8,168,661.60, 12,255,616.80 and 5,476,027.20 is: 8,215,800.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168,661.60 : 12,255,616.80 = 5,476,027.20 : x
  2. Step 2: Convert to fraction form
    8,168,661.60/12,255,616.80 = 5,476,027.20/x
  3. Step 3: Cross multiply
    8,168,661.60x = 12,255,616.80 × 5,476,027.20
  4. Step 4: Simplify right side
    8,168,661.60x = 67,112,090,949,576.97
  5. Step 5: Solve for x
    x = 67,112,090,949,576.97/8,168,661.60
  6. Step 6: Final answer
    x = 8,215,800.12

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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.