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Finding the Fourth Proportional to 583,290.15, 804,988.32 and 321,696.62

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Solution

The fourth proportional to 583,290.15, 804,988.32 and 321,696.62 is: 443,967.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,290.15 : 804,988.32 = 321,696.62 : x
  2. Step 2: Convert to fraction form
    583,290.15/804,988.32 = 321,696.62/x
  3. Step 3: Cross multiply
    583,290.15x = 804,988.32 × 321,696.62
  4. Step 4: Simplify right side
    583,290.15x = 258,962,023,998.94
  5. Step 5: Solve for x
    x = 258,962,023,998.94/583,290.15
  6. Step 6: Final answer
    x = 443,967.76

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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.