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Finding the Fourth Proportional to 9,966,892.80, 14,950,339.20 and 5,707,491.60

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Solution

The fourth proportional to 9,966,892.80, 14,950,339.20 and 5,707,491.60 is: 8,561,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966,892.80 : 14,950,339.20 = 5,707,491.60 : x
  2. Step 2: Convert to fraction form
    9,966,892.80/14,950,339.20 = 5,707,491.60/x
  3. Step 3: Cross multiply
    9,966,892.80x = 14,950,339.20 × 5,707,491.60
  4. Step 4: Simplify right side
    9,966,892.80x = 85,328,935,401,150.70
  5. Step 5: Solve for x
    x = 85,328,935,401,150.70/9,966,892.80
  6. Step 6: Final answer
    x = 8,561,237.40

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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.