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Finding the Fourth Proportional to 1,954,578.40, 2,931,770.40 and 1,008,044.80

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Solution

The fourth proportional to 1,954,578.40, 2,931,770.40 and 1,008,044.80 is: 1,512,017.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954,578.40 : 2,931,770.40 = 1,008,044.80 : x
  2. Step 2: Convert to fraction form
    1,954,578.40/2,931,770.40 = 1,008,044.80/x
  3. Step 3: Cross multiply
    1,954,578.40x = 2,931,770.40 × 1,008,044.80
  4. Step 4: Simplify right side
    1,954,578.40x = 2,955,355,906,513.92
  5. Step 5: Solve for x
    x = 2,955,355,906,513.92/1,954,578.40
  6. Step 6: Final answer
    x = 1,512,017.07

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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.