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Finding the Fourth Proportional to 8,798,434.58, 13,198,648.78 and 7,894,321.48

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Solution

The fourth proportional to 8,798,434.58, 13,198,648.78 and 7,894,321.48 is: 11,842,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798,434.58 : 13,198,648.78 = 7,894,321.48 : x
  2. Step 2: Convert to fraction form
    8,798,434.58/13,198,648.78 = 7,894,321.48/x
  3. Step 3: Cross multiply
    8,798,434.58x = 13,198,648.78 × 7,894,321.48
  4. Step 4: Simplify right side
    8,798,434.58x = 104,194,376,570,929.80
  5. Step 5: Solve for x
    x = 104,194,376,570,929.80/8,798,434.58
  6. Step 6: Final answer
    x = 11,842,376.69

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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.