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Finding the Fourth Proportional to 381,371.58, 526,237.74 and 245,589.66

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Solution

The fourth proportional to 381,371.58, 526,237.74 and 245,589.66 is: 338,878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,371.58 : 526,237.74 = 245,589.66 : x
  2. Step 2: Convert to fraction form
    381,371.58/526,237.74 = 245,589.66/x
  3. Step 3: Cross multiply
    381,371.58x = 526,237.74 × 245,589.66
  4. Step 4: Simplify right side
    381,371.58x = 129,238,547,645.77
  5. Step 5: Solve for x
    x = 129,238,547,645.77/381,371.58
  6. Step 6: Final answer
    x = 338,878.29

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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.