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Finding the Fourth Proportional to 7,136,691.35, 9,848,780.91 and 4,039,214.49

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Solution

The fourth proportional to 7,136,691.35, 9,848,780.91 and 4,039,214.49 is: 5,574,199.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136,691.35 : 9,848,780.91 = 4,039,214.49 : x
  2. Step 2: Convert to fraction form
    7,136,691.35/9,848,780.91 = 4,039,214.49/x
  3. Step 3: Cross multiply
    7,136,691.35x = 9,848,780.91 × 4,039,214.49
  4. Step 4: Simplify right side
    7,136,691.35x = 39,781,338,560,507.39
  5. Step 5: Solve for x
    x = 39,781,338,560,507.39/7,136,691.35
  6. Step 6: Final answer
    x = 5,574,199.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.