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Finding the Fourth Proportional to 116,655.60, 160,982.91 and 65,668.23

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Solution

The fourth proportional to 116,655.60, 160,982.91 and 65,668.23 is: 90,621.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,655.60 : 160,982.91 = 65,668.23 : x
  2. Step 2: Convert to fraction form
    116,655.60/160,982.91 = 65,668.23/x
  3. Step 3: Cross multiply
    116,655.60x = 160,982.91 × 65,668.23
  4. Step 4: Simplify right side
    116,655.60x = 10,571,462,759.95
  5. Step 5: Solve for x
    x = 10,571,462,759.95/116,655.60
  6. Step 6: Final answer
    x = 90,621.13

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1.5x scale

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.