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Finding the Fourth Proportional to 111,270.92, 153,505.14 and 66,533

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Solution

The fourth proportional to 111,270.92, 153,505.14 and 66,533 is: 91,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,270.92 : 153,505.14 = 66,533 : x
  2. Step 2: Convert to fraction form
    111,270.92/153,505.14 = 66,533/x
  3. Step 3: Cross multiply
    111,270.92x = 153,505.14 × 66,533
  4. Step 4: Simplify right side
    111,270.92x = 10,213,157,479.62
  5. Step 5: Solve for x
    x = 10,213,157,479.62/111,270.92
  6. Step 6: Final answer
    x = 91,786.40

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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.