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Finding the Fourth Proportional to 403,531.60, 605,151.60 and 163,544.80

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Solution

The fourth proportional to 403,531.60, 605,151.60 and 163,544.80 is: 245,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,531.60 : 605,151.60 = 163,544.80 : x
  2. Step 2: Convert to fraction form
    403,531.60/605,151.60 = 163,544.80/x
  3. Step 3: Cross multiply
    403,531.60x = 605,151.60 × 163,544.80
  4. Step 4: Simplify right side
    403,531.60x = 98,969,397,391.68
  5. Step 5: Solve for x
    x = 98,969,397,391.68/403,531.60
  6. Step 6: Final answer
    x = 245,258.11

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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.