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Finding the Fourth Proportional to 73,113.78, 109,545.85 and 39,774.32

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Solution

The fourth proportional to 73,113.78, 109,545.85 and 39,774.32 is: 59,593.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,113.78 : 109,545.85 = 39,774.32 : x
  2. Step 2: Convert to fraction form
    73,113.78/109,545.85 = 39,774.32/x
  3. Step 3: Cross multiply
    73,113.78x = 109,545.85 × 39,774.32
  4. Step 4: Simplify right side
    73,113.78x = 4,357,111,692.57
  5. Step 5: Solve for x
    x = 4,357,111,692.57/73,113.78
  6. Step 6: Final answer
    x = 59,593.58

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1.5x scale

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.