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Finding the Fourth Proportional to 439,765.91, 606,878.12 and 238,561.91

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Solution

The fourth proportional to 439,765.91, 606,878.12 and 238,561.91 is: 329,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,765.91 : 606,878.12 = 238,561.91 : x
  2. Step 2: Convert to fraction form
    439,765.91/606,878.12 = 238,561.91/x
  3. Step 3: Cross multiply
    439,765.91x = 606,878.12 × 238,561.91
  4. Step 4: Simplify right side
    439,765.91x = 144,778,003,444.41
  5. Step 5: Solve for x
    x = 144,778,003,444.41/439,765.91
  6. Step 6: Final answer
    x = 329,216.07

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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.