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Finding the Fourth Proportional to 8,874,988.80, 13,293,820.80 and 7,381,996.80

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Solution

The fourth proportional to 8,874,988.80, 13,293,820.80 and 7,381,996.80 is: 11,057,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,874,988.80 : 13,293,820.80 = 7,381,996.80 : x
  2. Step 2: Convert to fraction form
    8,874,988.80/13,293,820.80 = 7,381,996.80/x
  3. Step 3: Cross multiply
    8,874,988.80x = 13,293,820.80 × 7,381,996.80
  4. Step 4: Simplify right side
    8,874,988.80x = 98,134,942,605,373.44
  5. Step 5: Solve for x
    x = 98,134,942,605,373.44/8,874,988.80
  6. Step 6: Final answer
    x = 11,057,472.28

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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.