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Finding the Fourth Proportional to 1,262,939.16, 1,895,606.38 and 781,711.28

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Solution

The fourth proportional to 1,262,939.16, 1,895,606.38 and 781,711.28 is: 1,173,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,939.16 : 1,895,606.38 = 781,711.28 : x
  2. Step 2: Convert to fraction form
    1,262,939.16/1,895,606.38 = 781,711.28/x
  3. Step 3: Cross multiply
    1,262,939.16x = 1,895,606.38 × 781,711.28
  4. Step 4: Simplify right side
    1,262,939.16x = 1,481,816,889,685.97
  5. Step 5: Solve for x
    x = 1,481,816,889,685.97/1,262,939.16
  6. Step 6: Final answer
    x = 1,173,308.21

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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.