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Finding the Fourth Proportional to 100,462.76, 150,729.22 and 62,978.49

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Solution

The fourth proportional to 100,462.76, 150,729.22 and 62,978.49 is: 94,489.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,462.76 : 150,729.22 = 62,978.49 : x
  2. Step 2: Convert to fraction form
    100,462.76/150,729.22 = 62,978.49/x
  3. Step 3: Cross multiply
    100,462.76x = 150,729.22 × 62,978.49
  4. Step 4: Simplify right side
    100,462.76x = 9,492,698,674.48
  5. Step 5: Solve for x
    x = 9,492,698,674.48/100,462.76
  6. Step 6: Final answer
    x = 94,489.73

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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.