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Finding the Fourth Proportional to 319,003.78, 440,244.80 and 175,763.78

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Solution

The fourth proportional to 319,003.78, 440,244.80 and 175,763.78 is: 242,564.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,003.78 : 440,244.80 = 175,763.78 : x
  2. Step 2: Convert to fraction form
    319,003.78/440,244.80 = 175,763.78/x
  3. Step 3: Cross multiply
    319,003.78x = 440,244.80 × 175,763.78
  4. Step 4: Simplify right side
    319,003.78x = 77,379,091,713.37
  5. Step 5: Solve for x
    x = 77,379,091,713.37/319,003.78
  6. Step 6: Final answer
    x = 242,564.81

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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.