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Finding the Fourth Proportional to 221,070,511.20, 330,968,037.60 and 221,070,511.20

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Solution

The fourth proportional to 221,070,511.20, 330,968,037.60 and 221,070,511.20 is: 330,968,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,070,511.20 : 330,968,037.60 = 221,070,511.20 : x
  2. Step 2: Convert to fraction form
    221,070,511.20/330,968,037.60 = 221,070,511.20/x
  3. Step 3: Cross multiply
    221,070,511.20x = 330,968,037.60 × 221,070,511.20
  4. Step 4: Simplify right side
    221,070,511.20x = 73,167,273,263,092,816
  5. Step 5: Solve for x
    x = 73,167,273,263,092,816/221,070,511.20
  6. Step 6: Final answer
    x = 330,968,037.60

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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.