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Finding the Fourth Proportional to 571,924.12, 789,218.10 and 317,274.68

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Solution

The fourth proportional to 571,924.12, 789,218.10 and 317,274.68 is: 437,818.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,924.12 : 789,218.10 = 317,274.68 : x
  2. Step 2: Convert to fraction form
    571,924.12/789,218.10 = 317,274.68/x
  3. Step 3: Cross multiply
    571,924.12x = 789,218.10 × 317,274.68
  4. Step 4: Simplify right side
    571,924.12x = 250,398,920,127.71
  5. Step 5: Solve for x
    x = 250,398,920,127.71/571,924.12
  6. Step 6: Final answer
    x = 437,818.43

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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.