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Finding the Fourth Proportional to 1,799,123.80, 2,696,957.70 and 1,040,186.20

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Solution

The fourth proportional to 1,799,123.80, 2,696,957.70 and 1,040,186.20 is: 1,559,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,799,123.80 : 2,696,957.70 = 1,040,186.20 : x
  2. Step 2: Convert to fraction form
    1,799,123.80/2,696,957.70 = 1,040,186.20/x
  3. Step 3: Cross multiply
    1,799,123.80x = 2,696,957.70 × 1,040,186.20
  4. Step 4: Simplify right side
    1,799,123.80x = 2,805,338,181,523.74
  5. Step 5: Solve for x
    x = 2,805,338,181,523.74/1,799,123.80
  6. Step 6: Final answer
    x = 1,559,280.23

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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.