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Finding the Fourth Proportional to 225,909,985.20, 338,864,977.80 and 225,909,985.20

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Solution

The fourth proportional to 225,909,985.20, 338,864,977.80 and 225,909,985.20 is: 338,864,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,909,985.20 : 338,864,977.80 = 225,909,985.20 : x
  2. Step 2: Convert to fraction form
    225,909,985.20/338,864,977.80 = 225,909,985.20/x
  3. Step 3: Cross multiply
    225,909,985.20x = 338,864,977.80 × 225,909,985.20
  4. Step 4: Simplify right side
    225,909,985.20x = 76,552,982,119,596,320
  5. Step 5: Solve for x
    x = 76,552,982,119,596,320/225,909,985.20
  6. Step 6: Final answer
    x = 338,864,977.80

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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.