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Finding the Fourth Proportional to 8,496,661.74, 12,745,005.12 and 6,486,320.22

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Solution

The fourth proportional to 8,496,661.74, 12,745,005.12 and 6,486,320.22 is: 9,729,489.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,496,661.74 : 12,745,005.12 = 6,486,320.22 : x
  2. Step 2: Convert to fraction form
    8,496,661.74/12,745,005.12 = 6,486,320.22/x
  3. Step 3: Cross multiply
    8,496,661.74x = 12,745,005.12 × 6,486,320.22
  4. Step 4: Simplify right side
    8,496,661.74x = 82,668,184,413,859.52
  5. Step 5: Solve for x
    x = 82,668,184,413,859.52/8,496,661.74
  6. Step 6: Final answer
    x = 9,729,489.88

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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.