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Finding the Fourth Proportional to 2,229,890.70, 3,123,946.50 and 2,229,890.70

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Solution

The fourth proportional to 2,229,890.70, 3,123,946.50 and 2,229,890.70 is: 3,123,946.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229,890.70 : 3,123,946.50 = 2,229,890.70 : x
  2. Step 2: Convert to fraction form
    2,229,890.70/3,123,946.50 = 2,229,890.70/x
  3. Step 3: Cross multiply
    2,229,890.70x = 3,123,946.50 × 2,229,890.70
  4. Step 4: Simplify right side
    2,229,890.70x = 6,966,059,247,647.55
  5. Step 5: Solve for x
    x = 6,966,059,247,647.55/2,229,890.70
  6. Step 6: Final answer
    x = 3,123,946.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.