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Finding the Fourth Proportional to 575,145.90, 863,107.65 and 322,425.90

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Solution

The fourth proportional to 575,145.90, 863,107.65 and 322,425.90 is: 483,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,145.90 : 863,107.65 = 322,425.90 : x
  2. Step 2: Convert to fraction form
    575,145.90/863,107.65 = 322,425.90/x
  3. Step 3: Cross multiply
    575,145.90x = 863,107.65 × 322,425.90
  4. Step 4: Simplify right side
    575,145.90x = 278,288,260,848.14
  5. Step 5: Solve for x
    x = 278,288,260,848.14/575,145.90
  6. Step 6: Final answer
    x = 483,856.81

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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.