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Finding the Fourth Proportional to 1,354,441.74, 1,868,751.42 and 1,067,069.94

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Solution

The fourth proportional to 1,354,441.74, 1,868,751.42 and 1,067,069.94 is: 1,472,258.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,441.74 : 1,868,751.42 = 1,067,069.94 : x
  2. Step 2: Convert to fraction form
    1,354,441.74/1,868,751.42 = 1,067,069.94/x
  3. Step 3: Cross multiply
    1,354,441.74x = 1,868,751.42 × 1,067,069.94
  4. Step 4: Simplify right side
    1,354,441.74x = 1,994,088,465,614.31
  5. Step 5: Solve for x
    x = 1,994,088,465,614.31/1,354,441.74
  6. Step 6: Final answer
    x = 1,472,258.57

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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.