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Finding the Fourth Proportional to 8,798,981.80, 13,198,472.70 and 7,381,805.80

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Solution

The fourth proportional to 8,798,981.80, 13,198,472.70 and 7,381,805.80 is: 11,072,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798,981.80 : 13,198,472.70 = 7,381,805.80 : x
  2. Step 2: Convert to fraction form
    8,798,981.80/13,198,472.70 = 7,381,805.80/x
  3. Step 3: Cross multiply
    8,798,981.80x = 13,198,472.70 × 7,381,805.80
  4. Step 4: Simplify right side
    8,798,981.80x = 97,428,562,328,001.66
  5. Step 5: Solve for x
    x = 97,428,562,328,001.66/8,798,981.80
  6. Step 6: Final answer
    x = 11,072,708.70

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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.