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Finding the Fourth Proportional to 220,147,794.30, 330,221,691.45 and 56,385,234.30

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Solution

The fourth proportional to 220,147,794.30, 330,221,691.45 and 56,385,234.30 is: 84,577,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,147,794.30 : 330,221,691.45 = 56,385,234.30 : x
  2. Step 2: Convert to fraction form
    220,147,794.30/330,221,691.45 = 56,385,234.30/x
  3. Step 3: Cross multiply
    220,147,794.30x = 330,221,691.45 × 56,385,234.30
  4. Step 4: Simplify right side
    220,147,794.30x = 18,619,627,443,350,556
  5. Step 5: Solve for x
    x = 18,619,627,443,350,556/220,147,794.30
  6. Step 6: Final answer
    x = 84,577,851.45

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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.