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Finding the Fourth Proportional to 1,940,854.57, 2,678,344.51 and 1,057,811.65

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Solution

The fourth proportional to 1,940,854.57, 2,678,344.51 and 1,057,811.65 is: 1,459,761.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940,854.57 : 2,678,344.51 = 1,057,811.65 : x
  2. Step 2: Convert to fraction form
    1,940,854.57/2,678,344.51 = 1,057,811.65/x
  3. Step 3: Cross multiply
    1,940,854.57x = 2,678,344.51 × 1,057,811.65
  4. Step 4: Simplify right side
    1,940,854.57x = 2,833,184,016,523.23
  5. Step 5: Solve for x
    x = 2,833,184,016,523.23/1,940,854.57
  6. Step 6: Final answer
    x = 1,459,761.10

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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.