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Finding the Fourth Proportional to 1,408,977.84, 1,944,572.84 and 789,019.13

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Solution

The fourth proportional to 1,408,977.84, 1,944,572.84 and 789,019.13 is: 1,088,949.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,977.84 : 1,944,572.84 = 789,019.13 : x
  2. Step 2: Convert to fraction form
    1,408,977.84/1,944,572.84 = 789,019.13/x
  3. Step 3: Cross multiply
    1,408,977.84x = 1,944,572.84 × 789,019.13
  4. Step 4: Simplify right side
    1,408,977.84x = 1,534,305,171,354.77
  5. Step 5: Solve for x
    x = 1,534,305,171,354.77/1,408,977.84
  6. Step 6: Final answer
    x = 1,088,949.11

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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.