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Finding the Fourth Proportional to 216,735.76, 325,231.98 and 98,405.26

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Solution

The fourth proportional to 216,735.76, 325,231.98 and 98,405.26 is: 147,666.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,735.76 : 325,231.98 = 98,405.26 : x
  2. Step 2: Convert to fraction form
    216,735.76/325,231.98 = 98,405.26/x
  3. Step 3: Cross multiply
    216,735.76x = 325,231.98 × 98,405.26
  4. Step 4: Simplify right side
    216,735.76x = 32,004,537,552.21
  5. Step 5: Solve for x
    x = 32,004,537,552.21/216,735.76
  6. Step 6: Final answer
    x = 147,666.16

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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.