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Finding the Fourth Proportional to 82,013,722.20, 123,020,583.30 and 82,013,722.20

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Solution

The fourth proportional to 82,013,722.20, 123,020,583.30 and 82,013,722.20 is: 123,020,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,013,722.20 : 123,020,583.30 = 82,013,722.20 : x
  2. Step 2: Convert to fraction form
    82,013,722.20/123,020,583.30 = 82,013,722.20/x
  3. Step 3: Cross multiply
    82,013,722.20x = 123,020,583.30 × 82,013,722.20
  4. Step 4: Simplify right side
    82,013,722.20x = 10,089,375,943,648,160
  5. Step 5: Solve for x
    x = 10,089,375,943,648,160/82,013,722.20
  6. Step 6: Final answer
    x = 123,020,583.30

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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.