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Finding the Fourth Proportional to 116,628.48, 160,940.70 and 65,643.39

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Solution

The fourth proportional to 116,628.48, 160,940.70 and 65,643.39 is: 90,584.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,628.48 : 160,940.70 = 65,643.39 : x
  2. Step 2: Convert to fraction form
    116,628.48/160,940.70 = 65,643.39/x
  3. Step 3: Cross multiply
    116,628.48x = 160,940.70 × 65,643.39
  4. Step 4: Simplify right side
    116,628.48x = 10,564,693,136.97
  5. Step 5: Solve for x
    x = 10,564,693,136.97/116,628.48
  6. Step 6: Final answer
    x = 90,584.16

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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.