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Finding the Fourth Proportional to 1,995,913.87, 2,754,362.28 and 1,078,143.01

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Solution

The fourth proportional to 1,995,913.87, 2,754,362.28 and 1,078,143.01 is: 1,487,837.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995,913.87 : 2,754,362.28 = 1,078,143.01 : x
  2. Step 2: Convert to fraction form
    1,995,913.87/2,754,362.28 = 1,078,143.01/x
  3. Step 3: Cross multiply
    1,995,913.87x = 2,754,362.28 × 1,078,143.01
  4. Step 4: Simplify right side
    1,995,913.87x = 2,969,596,439,189.66
  5. Step 5: Solve for x
    x = 2,969,596,439,189.66/1,995,913.87
  6. Step 6: Final answer
    x = 1,487,837.97

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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.