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Finding the Fourth Proportional to 116,639.96, 160,968.26 and 65,655.98

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Solution

The fourth proportional to 116,639.96, 160,968.26 and 65,655.98 is: 90,608.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,639.96 : 160,968.26 = 65,655.98 : x
  2. Step 2: Convert to fraction form
    116,639.96/160,968.26 = 65,655.98/x
  3. Step 3: Cross multiply
    116,639.96x = 160,968.26 × 65,655.98
  4. Step 4: Simplify right side
    116,639.96x = 10,568,528,859.19
  5. Step 5: Solve for x
    x = 10,568,528,859.19/116,639.96
  6. Step 6: Final answer
    x = 90,608.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.