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Finding the Fourth Proportional to 439,607.34, 606,658.47 and 238,403.34

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Solution

The fourth proportional to 439,607.34, 606,658.47 and 238,403.34 is: 328,996.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,607.34 : 606,658.47 = 238,403.34 : x
  2. Step 2: Convert to fraction form
    439,607.34/606,658.47 = 238,403.34/x
  3. Step 3: Cross multiply
    439,607.34x = 606,658.47 × 238,403.34
  4. Step 4: Simplify right side
    439,607.34x = 144,629,405,487.29
  5. Step 5: Solve for x
    x = 144,629,405,487.29/439,607.34
  6. Step 6: Final answer
    x = 328,996.79

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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.