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Finding the Fourth Proportional to 7,885,366.80, 11,061,908.40 and 7,885,366.80

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Solution

The fourth proportional to 7,885,366.80, 11,061,908.40 and 7,885,366.80 is: 11,061,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885,366.80 : 11,061,908.40 = 7,885,366.80 : x
  2. Step 2: Convert to fraction form
    7,885,366.80/11,061,908.40 = 7,885,366.80/x
  3. Step 3: Cross multiply
    7,885,366.80x = 11,061,908.40 × 7,885,366.80
  4. Step 4: Simplify right side
    7,885,366.80x = 87,227,205,242,001.12
  5. Step 5: Solve for x
    x = 87,227,205,242,001.12/7,885,366.80
  6. Step 6: Final answer
    x = 11,061,908.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.