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Finding the Fourth Proportional to 118,884.86, 164,019.08 and 67,860.79

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Solution

The fourth proportional to 118,884.86, 164,019.08 and 67,860.79 is: 93,623.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,884.86 : 164,019.08 = 67,860.79 : x
  2. Step 2: Convert to fraction form
    118,884.86/164,019.08 = 67,860.79/x
  3. Step 3: Cross multiply
    118,884.86x = 164,019.08 × 67,860.79
  4. Step 4: Simplify right side
    118,884.86x = 11,130,463,721.76
  5. Step 5: Solve for x
    x = 11,130,463,721.76/118,884.86
  6. Step 6: Final answer
    x = 93,623.89

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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.