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Finding the Fourth Proportional to 1,964,059.80, 2,711,647.78 and 1,344,901.07

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Solution

The fourth proportional to 1,964,059.80, 2,711,647.78 and 1,344,901.07 is: 1,856,816.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964,059.80 : 2,711,647.78 = 1,344,901.07 : x
  2. Step 2: Convert to fraction form
    1,964,059.80/2,711,647.78 = 1,344,901.07/x
  3. Step 3: Cross multiply
    1,964,059.80x = 2,711,647.78 × 1,344,901.07
  4. Step 4: Simplify right side
    1,964,059.80x = 3,646,897,983,864.63
  5. Step 5: Solve for x
    x = 3,646,897,983,864.63/1,964,059.80
  6. Step 6: Final answer
    x = 1,856,816.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.