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Finding the Fourth Proportional to 75,245.78, 112,792.84 and 47,185.67

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Solution

The fourth proportional to 75,245.78, 112,792.84 and 47,185.67 is: 70,730.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,245.78 : 112,792.84 = 47,185.67 : x
  2. Step 2: Convert to fraction form
    75,245.78/112,792.84 = 47,185.67/x
  3. Step 3: Cross multiply
    75,245.78x = 112,792.84 × 47,185.67
  4. Step 4: Simplify right side
    75,245.78x = 5,322,205,726.60
  5. Step 5: Solve for x
    x = 5,322,205,726.60/75,245.78
  6. Step 6: Final answer
    x = 70,730.95

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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.