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Finding the Fourth Proportional to 73,117.60, 109,692.60 and 57,371.20

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Solution

The fourth proportional to 73,117.60, 109,692.60 and 57,371.20 is: 86,069.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,117.60 : 109,692.60 = 57,371.20 : x
  2. Step 2: Convert to fraction form
    73,117.60/109,692.60 = 57,371.20/x
  3. Step 3: Cross multiply
    73,117.60x = 109,692.60 × 57,371.20
  4. Step 4: Simplify right side
    73,117.60x = 6,293,196,093.12
  5. Step 5: Solve for x
    x = 6,293,196,093.12/73,117.60
  6. Step 6: Final answer
    x = 86,069.51

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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.