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Finding the Fourth Proportional to 216,736.20, 325,007.10 and 98,346.60

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Solution

The fourth proportional to 216,736.20, 325,007.10 and 98,346.60 is: 147,475.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,736.20 : 325,007.10 = 98,346.60 : x
  2. Step 2: Convert to fraction form
    216,736.20/325,007.10 = 98,346.60/x
  3. Step 3: Cross multiply
    216,736.20x = 325,007.10 × 98,346.60
  4. Step 4: Simplify right side
    216,736.20x = 31,963,343,260.86
  5. Step 5: Solve for x
    x = 31,963,343,260.86/216,736.20
  6. Step 6: Final answer
    x = 147,475.79

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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.