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Finding the Fourth Proportional to 319,489.62, 440,885.61 and 181,683.51

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Solution

The fourth proportional to 319,489.62, 440,885.61 and 181,683.51 is: 250,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,489.62 : 440,885.61 = 181,683.51 : x
  2. Step 2: Convert to fraction form
    319,489.62/440,885.61 = 181,683.51/x
  3. Step 3: Cross multiply
    319,489.62x = 440,885.61 × 181,683.51
  4. Step 4: Simplify right side
    319,489.62x = 80,101,645,133.29
  5. Step 5: Solve for x
    x = 80,101,645,133.29/319,489.62
  6. Step 6: Final answer
    x = 250,717.52

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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.