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Finding the Fourth Proportional to 1,408,935.92, 1,944,332.34 and 764,356.04

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Solution

The fourth proportional to 1,408,935.92, 1,944,332.34 and 764,356.04 is: 1,054,811.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,935.92 : 1,944,332.34 = 764,356.04 : x
  2. Step 2: Convert to fraction form
    1,408,935.92/1,944,332.34 = 764,356.04/x
  3. Step 3: Cross multiply
    1,408,935.92x = 1,944,332.34 × 764,356.04
  4. Step 4: Simplify right side
    1,408,935.92x = 1,486,162,164,024.55
  5. Step 5: Solve for x
    x = 1,486,162,164,024.55/1,408,935.92
  6. Step 6: Final answer
    x = 1,054,811.75

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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.