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Finding the Fourth Proportional to 1,866,593.40, 2,792,891.70 and 1,698,631.80

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Solution

The fourth proportional to 1,866,593.40, 2,792,891.70 and 1,698,631.80 is: 2,541,579.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,593.40 : 2,792,891.70 = 1,698,631.80 : x
  2. Step 2: Convert to fraction form
    1,866,593.40/2,792,891.70 = 1,698,631.80/x
  3. Step 3: Cross multiply
    1,866,593.40x = 2,792,891.70 × 1,698,631.80
  4. Step 4: Simplify right side
    1,866,593.40x = 4,744,094,655,576.06
  5. Step 5: Solve for x
    x = 4,744,094,655,576.06/1,866,593.40
  6. Step 6: Final answer
    x = 2,541,579.04

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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.