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Finding the Fourth Proportional to 67,915, 93,723.42 and 38,107

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Solution

The fourth proportional to 67,915, 93,723.42 and 38,107 is: 52,588.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,915 : 93,723.42 = 38,107 : x
  2. Step 2: Convert to fraction form
    67,915/93,723.42 = 38,107/x
  3. Step 3: Cross multiply
    67,915x = 93,723.42 × 38,107
  4. Step 4: Simplify right side
    67,915x = 3,571,518,365.94
  5. Step 5: Solve for x
    x = 3,571,518,365.94/67,915
  6. Step 6: Final answer
    x = 52,588.06

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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.