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Finding the Fourth Proportional to 7,778,751.72, 11,668,127.57 and 2,098,966.92

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Solution

The fourth proportional to 7,778,751.72, 11,668,127.57 and 2,098,966.92 is: 3,148,450.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778,751.72 : 11,668,127.57 = 2,098,966.92 : x
  2. Step 2: Convert to fraction form
    7,778,751.72/11,668,127.57 = 2,098,966.92/x
  3. Step 3: Cross multiply
    7,778,751.72x = 11,668,127.57 × 2,098,966.92
  4. Step 4: Simplify right side
    7,778,751.72x = 24,491,013,777,275.15
  5. Step 5: Solve for x
    x = 24,491,013,777,275.15/7,778,751.72
  6. Step 6: Final answer
    x = 3,148,450.38

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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.