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Finding the Fourth Proportional to 1,282,764.34, 1,923,840.19 and 383,964.85

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Solution

The fourth proportional to 1,282,764.34, 1,923,840.19 and 383,964.85 is: 575,855.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,764.34 : 1,923,840.19 = 383,964.85 : x
  2. Step 2: Convert to fraction form
    1,282,764.34/1,923,840.19 = 383,964.85/x
  3. Step 3: Cross multiply
    1,282,764.34x = 1,923,840.19 × 383,964.85
  4. Step 4: Simplify right side
    1,282,764.34x = 738,687,009,977.32
  5. Step 5: Solve for x
    x = 738,687,009,977.32/1,282,764.34
  6. Step 6: Final answer
    x = 575,855.59

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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.