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Finding the Fourth Proportional to 319,355.88, 440,704.98 and 176,129.16

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Solution

The fourth proportional to 319,355.88, 440,704.98 and 176,129.16 is: 243,054.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,355.88 : 440,704.98 = 176,129.16 : x
  2. Step 2: Convert to fraction form
    319,355.88/440,704.98 = 176,129.16/x
  3. Step 3: Cross multiply
    319,355.88x = 440,704.98 × 176,129.16
  4. Step 4: Simplify right side
    319,355.88x = 77,620,997,935.22
  5. Step 5: Solve for x
    x = 77,620,997,935.22/319,355.88
  6. Step 6: Final answer
    x = 243,054.86

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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.