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Finding the Fourth Proportional to 6,309,398.89, 8,706,976.64 and 3,408,792.08

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Solution

The fourth proportional to 6,309,398.89, 8,706,976.64 and 3,408,792.08 is: 4,704,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,309,398.89 : 8,706,976.64 = 3,408,792.08 : x
  2. Step 2: Convert to fraction form
    6,309,398.89/8,706,976.64 = 3,408,792.08/x
  3. Step 3: Cross multiply
    6,309,398.89x = 8,706,976.64 × 3,408,792.08
  4. Step 4: Simplify right side
    6,309,398.89x = 29,680,272,963,381.14
  5. Step 5: Solve for x
    x = 29,680,272,963,381.14/6,309,398.89
  6. Step 6: Final answer
    x = 4,704,136.40

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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.