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Finding the Fourth Proportional to 619,961.14, 855,545.92 and 348,029.56

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Solution

The fourth proportional to 619,961.14, 855,545.92 and 348,029.56 is: 480,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,961.14 : 855,545.92 = 348,029.56 : x
  2. Step 2: Convert to fraction form
    619,961.14/855,545.92 = 348,029.56/x
  3. Step 3: Cross multiply
    619,961.14x = 855,545.92 × 348,029.56
  4. Step 4: Simplify right side
    619,961.14x = 297,755,270,097.40
  5. Step 5: Solve for x
    x = 297,755,270,097.40/619,961.14
  6. Step 6: Final answer
    x = 480,280.54

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1.5x scale

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.