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Finding the Fourth Proportional to 362,544.32, 500,445.90 and 311,351.48

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Solution

The fourth proportional to 362,544.32, 500,445.90 and 311,351.48 is: 429,780.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,544.32 : 500,445.90 = 311,351.48 : x
  2. Step 2: Convert to fraction form
    362,544.32/500,445.90 = 311,351.48/x
  3. Step 3: Cross multiply
    362,544.32x = 500,445.90 × 311,351.48
  4. Step 4: Simplify right side
    362,544.32x = 155,814,571,708.48
  5. Step 5: Solve for x
    x = 155,814,571,708.48/362,544.32
  6. Step 6: Final answer
    x = 429,780.75

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1.5x scale

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.