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Finding the Fourth Proportional to 220,543,959.40, 330,815,939.10 and 220,543,959.40

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Solution

The fourth proportional to 220,543,959.40, 330,815,939.10 and 220,543,959.40 is: 330,815,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,543,959.40 : 330,815,939.10 = 220,543,959.40 : x
  2. Step 2: Convert to fraction form
    220,543,959.40/330,815,939.10 = 220,543,959.40/x
  3. Step 3: Cross multiply
    220,543,959.40x = 330,815,939.10 × 220,543,959.40
  4. Step 4: Simplify right side
    220,543,959.40x = 72,959,457,041,743,280
  5. Step 5: Solve for x
    x = 72,959,457,041,743,280/220,543,959.40
  6. Step 6: Final answer
    x = 330,815,939.10

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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.