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Finding the Fourth Proportional to 66,716.88, 92,144.88 and 45,459.24

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Solution

The fourth proportional to 66,716.88, 92,144.88 and 45,459.24 is: 62,785.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,716.88 : 92,144.88 = 45,459.24 : x
  2. Step 2: Convert to fraction form
    66,716.88/92,144.88 = 45,459.24/x
  3. Step 3: Cross multiply
    66,716.88x = 92,144.88 × 45,459.24
  4. Step 4: Simplify right side
    66,716.88x = 4,188,836,214.69
  5. Step 5: Solve for x
    x = 4,188,836,214.69/66,716.88
  6. Step 6: Final answer
    x = 62,785.25

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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.