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Finding the Fourth Proportional to 88,216.74, 121,692.48 and 55,894.32

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Solution

The fourth proportional to 88,216.74, 121,692.48 and 55,894.32 is: 77,104.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,216.74 : 121,692.48 = 55,894.32 : x
  2. Step 2: Convert to fraction form
    88,216.74/121,692.48 = 55,894.32/x
  3. Step 3: Cross multiply
    88,216.74x = 121,692.48 × 55,894.32
  4. Step 4: Simplify right side
    88,216.74x = 6,801,918,418.71
  5. Step 5: Solve for x
    x = 6,801,918,418.71/88,216.74
  6. Step 6: Final answer
    x = 77,104.62

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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.