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Finding the Fourth Proportional to 592,729, 817,959.42 and 320,790.76

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Solution

The fourth proportional to 592,729, 817,959.42 and 320,790.76 is: 442,687.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,729 : 817,959.42 = 320,790.76 : x
  2. Step 2: Convert to fraction form
    592,729/817,959.42 = 320,790.76/x
  3. Step 3: Cross multiply
    592,729x = 817,959.42 × 320,790.76
  4. Step 4: Simplify right side
    592,729x = 262,393,823,990.96
  5. Step 5: Solve for x
    x = 262,393,823,990.96/592,729
  6. Step 6: Final answer
    x = 442,687.68

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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.