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Finding the Fourth Proportional to 60,978.49, 91,467.73 and 40,197.13

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Solution

The fourth proportional to 60,978.49, 91,467.73 and 40,197.13 is: 60,295.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,978.49 : 91,467.73 = 40,197.13 : x
  2. Step 2: Convert to fraction form
    60,978.49/91,467.73 = 40,197.13/x
  3. Step 3: Cross multiply
    60,978.49x = 91,467.73 × 40,197.13
  4. Step 4: Simplify right side
    60,978.49x = 3,676,740,233.61
  5. Step 5: Solve for x
    x = 3,676,740,233.61/60,978.49
  6. Step 6: Final answer
    x = 60,295.69

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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.