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Finding the Fourth Proportional to 7,700,653.78, 10,626,986.20 and 4,262,952.22

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Solution

The fourth proportional to 7,700,653.78, 10,626,986.20 and 4,262,952.22 is: 5,882,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,700,653.78 : 10,626,986.20 = 4,262,952.22 : x
  2. Step 2: Convert to fraction form
    7,700,653.78/10,626,986.20 = 4,262,952.22/x
  3. Step 3: Cross multiply
    7,700,653.78x = 10,626,986.20 × 4,262,952.22
  4. Step 4: Simplify right side
    7,700,653.78x = 45,302,334,375,974.52
  5. Step 5: Solve for x
    x = 45,302,334,375,974.52/7,700,653.78
  6. Step 6: Final answer
    x = 5,882,920.55

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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.