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Finding the Fourth Proportional to 122,367.51, 168,867.63 and 71,415.44

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Solution

The fourth proportional to 122,367.51, 168,867.63 and 71,415.44 is: 98,553.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,367.51 : 168,867.63 = 71,415.44 : x
  2. Step 2: Convert to fraction form
    122,367.51/168,867.63 = 71,415.44/x
  3. Step 3: Cross multiply
    122,367.51x = 168,867.63 × 71,415.44
  4. Step 4: Simplify right side
    122,367.51x = 12,059,755,253.87
  5. Step 5: Solve for x
    x = 12,059,755,253.87/122,367.51
  6. Step 6: Final answer
    x = 98,553.57

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1.5x scale

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.