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Finding the Fourth Proportional to 8,859,562.70, 13,289,344.05 and 8,775,581.90

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Solution

The fourth proportional to 8,859,562.70, 13,289,344.05 and 8,775,581.90 is: 13,163,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859,562.70 : 13,289,344.05 = 8,775,581.90 : x
  2. Step 2: Convert to fraction form
    8,859,562.70/13,289,344.05 = 8,775,581.90/x
  3. Step 3: Cross multiply
    8,859,562.70x = 13,289,344.05 × 8,775,581.90
  4. Step 4: Simplify right side
    8,859,562.70x = 116,621,727,108,052.70
  5. Step 5: Solve for x
    x = 116,621,727,108,052.70/8,859,562.70
  6. Step 6: Final answer
    x = 13,163,372.85

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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.