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Finding the Fourth Proportional to 220,575,400.80, 330,863,101.20 and 220,575,400.80

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Solution

The fourth proportional to 220,575,400.80, 330,863,101.20 and 220,575,400.80 is: 330,863,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,575,400.80 : 330,863,101.20 = 220,575,400.80 : x
  2. Step 2: Convert to fraction form
    220,575,400.80/330,863,101.20 = 220,575,400.80/x
  3. Step 3: Cross multiply
    220,575,400.80x = 330,863,101.20 × 220,575,400.80
  4. Step 4: Simplify right side
    220,575,400.80x = 72,980,261,157,120,960
  5. Step 5: Solve for x
    x = 72,980,261,157,120,960/220,575,400.80
  6. Step 6: Final answer
    x = 330,863,101.20

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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.