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Finding the Fourth Proportional to 111,220.94, 153,481.37 and 65,899.22

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Solution

The fourth proportional to 111,220.94, 153,481.37 and 65,899.22 is: 90,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,220.94 : 153,481.37 = 65,899.22 : x
  2. Step 2: Convert to fraction form
    111,220.94/153,481.37 = 65,899.22/x
  3. Step 3: Cross multiply
    111,220.94x = 153,481.37 × 65,899.22
  4. Step 4: Simplify right side
    111,220.94x = 10,114,301,470.63
  5. Step 5: Solve for x
    x = 10,114,301,470.63/111,220.94
  6. Step 6: Final answer
    x = 90,938.82

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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.