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Finding the Fourth Proportional to 216,980.86, 325,241.65 and 98,735.24

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Solution

The fourth proportional to 216,980.86, 325,241.65 and 98,735.24 is: 147,998.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,980.86 : 325,241.65 = 98,735.24 : x
  2. Step 2: Convert to fraction form
    216,980.86/325,241.65 = 98,735.24/x
  3. Step 3: Cross multiply
    216,980.86x = 325,241.65 × 98,735.24
  4. Step 4: Simplify right side
    216,980.86x = 32,112,812,370.75
  5. Step 5: Solve for x
    x = 32,112,812,370.75/216,980.86
  6. Step 6: Final answer
    x = 147,998.36

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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.