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Finding the Fourth Proportional to 682,108.90, 941,269.63 and 391,767.74

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Solution

The fourth proportional to 682,108.90, 941,269.63 and 391,767.74 is: 540,616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,108.90 : 941,269.63 = 391,767.74 : x
  2. Step 2: Convert to fraction form
    682,108.90/941,269.63 = 391,767.74/x
  3. Step 3: Cross multiply
    682,108.90x = 941,269.63 × 391,767.74
  4. Step 4: Simplify right side
    682,108.90x = 368,759,074,254.29
  5. Step 5: Solve for x
    x = 368,759,074,254.29/682,108.90
  6. Step 6: Final answer
    x = 540,616.13

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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.