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Finding the Fourth Proportional to 319,063.44, 440,301.87 and 173,870.49

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Solution

The fourth proportional to 319,063.44, 440,301.87 and 173,870.49 is: 239,938.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,063.44 : 440,301.87 = 173,870.49 : x
  2. Step 2: Convert to fraction form
    319,063.44/440,301.87 = 173,870.49/x
  3. Step 3: Cross multiply
    319,063.44x = 440,301.87 × 173,870.49
  4. Step 4: Simplify right side
    319,063.44x = 76,555,501,884.82
  5. Step 5: Solve for x
    x = 76,555,501,884.82/319,063.44
  6. Step 6: Final answer
    x = 239,938.18

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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.