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Finding the Fourth Proportional to 216,918.60, 325,159.20 and 98,674.80

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Solution

The fourth proportional to 216,918.60, 325,159.20 and 98,674.80 is: 147,912.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,918.60 : 325,159.20 = 98,674.80 : x
  2. Step 2: Convert to fraction form
    216,918.60/325,159.20 = 98,674.80/x
  3. Step 3: Cross multiply
    216,918.60x = 325,159.20 × 98,674.80
  4. Step 4: Simplify right side
    216,918.60x = 32,085,019,028.16
  5. Step 5: Solve for x
    x = 32,085,019,028.16/216,918.60
  6. Step 6: Final answer
    x = 147,912.71

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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.