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Finding the Fourth Proportional to 6,912,648.80, 10,365,862.80 and 2,651,400.80

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Solution

The fourth proportional to 6,912,648.80, 10,365,862.80 and 2,651,400.80 is: 3,975,908.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912,648.80 : 10,365,862.80 = 2,651,400.80 : x
  2. Step 2: Convert to fraction form
    6,912,648.80/10,365,862.80 = 2,651,400.80/x
  3. Step 3: Cross multiply
    6,912,648.80x = 10,365,862.80 × 2,651,400.80
  4. Step 4: Simplify right side
    6,912,648.80x = 27,484,056,920,610.24
  5. Step 5: Solve for x
    x = 27,484,056,920,610.24/6,912,648.80
  6. Step 6: Final answer
    x = 3,975,908.18

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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.