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Finding the Fourth Proportional to 1,981,646.94, 2,734,841.43 and 1,122,360.06

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Solution

The fourth proportional to 1,981,646.94, 2,734,841.43 and 1,122,360.06 is: 1,548,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,646.94 : 2,734,841.43 = 1,122,360.06 : x
  2. Step 2: Convert to fraction form
    1,981,646.94/2,734,841.43 = 1,122,360.06/x
  3. Step 3: Cross multiply
    1,981,646.94x = 2,734,841.43 × 1,122,360.06
  4. Step 4: Simplify right side
    1,981,646.94x = 3,069,476,791,465.29
  5. Step 5: Solve for x
    x = 3,069,476,791,465.29/1,981,646.94
  6. Step 6: Final answer
    x = 1,548,952.40

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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.