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Finding the Fourth Proportional to 556,829.64, 768,416.76 and 327,412.80

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Solution

The fourth proportional to 556,829.64, 768,416.76 and 327,412.80 is: 451,824.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,829.64 : 768,416.76 = 327,412.80 : x
  2. Step 2: Convert to fraction form
    556,829.64/768,416.76 = 327,412.80/x
  3. Step 3: Cross multiply
    556,829.64x = 768,416.76 × 327,412.80
  4. Step 4: Simplify right side
    556,829.64x = 251,589,482,958.53
  5. Step 5: Solve for x
    x = 251,589,482,958.53/556,829.64
  6. Step 6: Final answer
    x = 451,824.88

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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.