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Finding the Fourth Proportional to 447,656.40, 672,262.20 and 433,659.60

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Solution

The fourth proportional to 447,656.40, 672,262.20 and 433,659.60 is: 651,242.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,656.40 : 672,262.20 = 433,659.60 : x
  2. Step 2: Convert to fraction form
    447,656.40/672,262.20 = 433,659.60/x
  3. Step 3: Cross multiply
    447,656.40x = 672,262.20 × 433,659.60
  4. Step 4: Simplify right side
    447,656.40x = 291,532,956,747.12
  5. Step 5: Solve for x
    x = 291,532,956,747.12/447,656.40
  6. Step 6: Final answer
    x = 651,242.69

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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.