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Finding the Fourth Proportional to 10,401,321.20, 15,580,986.60 and 10,401,321.20

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Solution

The fourth proportional to 10,401,321.20, 15,580,986.60 and 10,401,321.20 is: 15,580,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,401,321.20 : 15,580,986.60 = 10,401,321.20 : x
  2. Step 2: Convert to fraction form
    10,401,321.20/15,580,986.60 = 10,401,321.20/x
  3. Step 3: Cross multiply
    10,401,321.20x = 15,580,986.60 × 10,401,321.20
  4. Step 4: Simplify right side
    10,401,321.20x = 162,062,846,239,495.91
  5. Step 5: Solve for x
    x = 162,062,846,239,495.91/10,401,321.20
  6. Step 6: Final answer
    x = 15,580,986.60

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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.