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Finding the Fourth Proportional to 115,681.80, 173,781.90 and 110,958.60

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Solution

The fourth proportional to 115,681.80, 173,781.90 and 110,958.60 is: 166,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,681.80 : 173,781.90 = 110,958.60 : x
  2. Step 2: Convert to fraction form
    115,681.80/173,781.90 = 110,958.60/x
  3. Step 3: Cross multiply
    115,681.80x = 173,781.90 × 110,958.60
  4. Step 4: Simplify right side
    115,681.80x = 19,282,596,329.34
  5. Step 5: Solve for x
    x = 19,282,596,329.34/115,681.80
  6. Step 6: Final answer
    x = 166,686.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.