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Finding the Fourth Proportional to 587,219.51, 810,349.14 and 345,517.74

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Solution

The fourth proportional to 587,219.51, 810,349.14 and 345,517.74 is: 476,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,219.51 : 810,349.14 = 345,517.74 : x
  2. Step 2: Convert to fraction form
    587,219.51/810,349.14 = 345,517.74/x
  3. Step 3: Cross multiply
    587,219.51x = 810,349.14 × 345,517.74
  4. Step 4: Simplify right side
    587,219.51x = 279,989,999,129.24
  5. Step 5: Solve for x
    x = 279,989,999,129.24/587,219.51
  6. Step 6: Final answer
    x = 476,806.36

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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.