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Finding the Fourth Proportional to 115,721.94, 173,602.35 and 36,860.34

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Solution

The fourth proportional to 115,721.94, 173,602.35 and 36,860.34 is: 55,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,721.94 : 173,602.35 = 36,860.34 : x
  2. Step 2: Convert to fraction form
    115,721.94/173,602.35 = 36,860.34/x
  3. Step 3: Cross multiply
    115,721.94x = 173,602.35 × 36,860.34
  4. Step 4: Simplify right side
    115,721.94x = 6,399,041,645.80
  5. Step 5: Solve for x
    x = 6,399,041,645.80/115,721.94
  6. Step 6: Final answer
    x = 55,296.70

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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.