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Finding the Fourth Proportional to 111,497.52, 153,842.28 and 66,190.44

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Solution

The fourth proportional to 111,497.52, 153,842.28 and 66,190.44 is: 91,328.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,497.52 : 153,842.28 = 66,190.44 : x
  2. Step 2: Convert to fraction form
    111,497.52/153,842.28 = 66,190.44/x
  3. Step 3: Cross multiply
    111,497.52x = 153,842.28 × 66,190.44
  4. Step 4: Simplify right side
    111,497.52x = 10,182,888,203.80
  5. Step 5: Solve for x
    x = 10,182,888,203.80/111,497.52
  6. Step 6: Final answer
    x = 91,328.38

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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.