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Finding the Fourth Proportional to 322,404.60, 483,606.90 and 265,323.90

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Solution

The fourth proportional to 322,404.60, 483,606.90 and 265,323.90 is: 397,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,404.60 : 483,606.90 = 265,323.90 : x
  2. Step 2: Convert to fraction form
    322,404.60/483,606.90 = 265,323.90/x
  3. Step 3: Cross multiply
    322,404.60x = 483,606.90 × 265,323.90
  4. Step 4: Simplify right side
    322,404.60x = 128,312,468,774.91
  5. Step 5: Solve for x
    x = 128,312,468,774.91/322,404.60
  6. Step 6: Final answer
    x = 397,985.85

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1.5x scale

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.