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Finding the Fourth Proportional to 9,578,049.20, 13,442,861.20 and 9,578,049.20

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Solution

The fourth proportional to 9,578,049.20, 13,442,861.20 and 9,578,049.20 is: 13,442,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,578,049.20 : 13,442,861.20 = 9,578,049.20 : x
  2. Step 2: Convert to fraction form
    9,578,049.20/13,442,861.20 = 9,578,049.20/x
  3. Step 3: Cross multiply
    9,578,049.20x = 13,442,861.20 × 9,578,049.20
  4. Step 4: Simplify right side
    9,578,049.20x = 128,756,385,962,371.02
  5. Step 5: Solve for x
    x = 128,756,385,962,371.02/9,578,049.20
  6. Step 6: Final answer
    x = 13,442,861.20

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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.