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Finding the Fourth Proportional to 5,431,278.90, 7,625,048.10 and 5,431,278.90

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Solution

The fourth proportional to 5,431,278.90, 7,625,048.10 and 5,431,278.90 is: 7,625,048.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431,278.90 : 7,625,048.10 = 5,431,278.90 : x
  2. Step 2: Convert to fraction form
    5,431,278.90/7,625,048.10 = 5,431,278.90/x
  3. Step 3: Cross multiply
    5,431,278.90x = 7,625,048.10 × 5,431,278.90
  4. Step 4: Simplify right side
    5,431,278.90x = 41,413,762,857,015.09
  5. Step 5: Solve for x
    x = 41,413,762,857,015.09/5,431,278.90
  6. Step 6: Final answer
    x = 7,625,048.10

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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.