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Finding the Fourth Proportional to 667,448.11, 1,000,873.16 and 397,703.53

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Solution

The fourth proportional to 667,448.11, 1,000,873.16 and 397,703.53 is: 596,377.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,448.11 : 1,000,873.16 = 397,703.53 : x
  2. Step 2: Convert to fraction form
    667,448.11/1,000,873.16 = 397,703.53/x
  3. Step 3: Cross multiply
    667,448.11x = 1,000,873.16 × 397,703.53
  4. Step 4: Simplify right side
    667,448.11x = 398,050,788,814.26
  5. Step 5: Solve for x
    x = 398,050,788,814.26/667,448.11
  6. Step 6: Final answer
    x = 596,377.13

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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.