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Finding the Fourth Proportional to 619,959.96, 855,544.41 and 348,028.38

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Solution

The fourth proportional to 619,959.96, 855,544.41 and 348,028.38 is: 480,278.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,959.96 : 855,544.41 = 348,028.38 : x
  2. Step 2: Convert to fraction form
    619,959.96/855,544.41 = 348,028.38/x
  3. Step 3: Cross multiply
    619,959.96x = 855,544.41 × 348,028.38
  4. Step 4: Simplify right side
    619,959.96x = 297,753,735,030.36
  5. Step 5: Solve for x
    x = 297,753,735,030.36/619,959.96
  6. Step 6: Final answer
    x = 480,278.98

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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.