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Finding the Fourth Proportional to 8,295,879.60, 12,443,819.40 and 6,878,703.60

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Solution

The fourth proportional to 8,295,879.60, 12,443,819.40 and 6,878,703.60 is: 10,318,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,295,879.60 : 12,443,819.40 = 6,878,703.60 : x
  2. Step 2: Convert to fraction form
    8,295,879.60/12,443,819.40 = 6,878,703.60/x
  3. Step 3: Cross multiply
    8,295,879.60x = 12,443,819.40 × 6,878,703.60
  4. Step 4: Simplify right side
    8,295,879.60x = 85,597,345,304,529.84
  5. Step 5: Solve for x
    x = 85,597,345,304,529.84/8,295,879.60
  6. Step 6: Final answer
    x = 10,318,055.40

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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.