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Finding the Fourth Proportional to 122,209.94, 168,633.32 and 70,529

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Solution

The fourth proportional to 122,209.94, 168,633.32 and 70,529 is: 97,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,209.94 : 168,633.32 = 70,529 : x
  2. Step 2: Convert to fraction form
    122,209.94/168,633.32 = 70,529/x
  3. Step 3: Cross multiply
    122,209.94x = 168,633.32 × 70,529
  4. Step 4: Simplify right side
    122,209.94x = 11,893,539,426.28
  5. Step 5: Solve for x
    x = 11,893,539,426.28/122,209.94
  6. Step 6: Final answer
    x = 97,320.56

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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.