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Finding the Fourth Proportional to 75,408.82, 104,038.12 and 48,200.82

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Solution

The fourth proportional to 75,408.82, 104,038.12 and 48,200.82 is: 66,500.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,408.82 : 104,038.12 = 48,200.82 : x
  2. Step 2: Convert to fraction form
    75,408.82/104,038.12 = 48,200.82/x
  3. Step 3: Cross multiply
    75,408.82x = 104,038.12 × 48,200.82
  4. Step 4: Simplify right side
    75,408.82x = 5,014,722,695.26
  5. Step 5: Solve for x
    x = 5,014,722,695.26/75,408.82
  6. Step 6: Final answer
    x = 66,500.48

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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.