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Finding the Fourth Proportional to 1,245,772.40, 1,866,034.20 and 1,245,772.40

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Solution

The fourth proportional to 1,245,772.40, 1,866,034.20 and 1,245,772.40 is: 1,866,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,772.40 : 1,866,034.20 = 1,245,772.40 : x
  2. Step 2: Convert to fraction form
    1,245,772.40/1,866,034.20 = 1,245,772.40/x
  3. Step 3: Cross multiply
    1,245,772.40x = 1,866,034.20 × 1,245,772.40
  4. Step 4: Simplify right side
    1,245,772.40x = 2,324,653,903,816.08
  5. Step 5: Solve for x
    x = 2,324,653,903,816.08/1,245,772.40
  6. Step 6: Final answer
    x = 1,866,034.20

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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.