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Finding the Fourth Proportional to 111,327.25, 153,632.15 and 66,615.25

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Solution

The fourth proportional to 111,327.25, 153,632.15 and 66,615.25 is: 91,929.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,327.25 : 153,632.15 = 66,615.25 : x
  2. Step 2: Convert to fraction form
    111,327.25/153,632.15 = 66,615.25/x
  3. Step 3: Cross multiply
    111,327.25x = 153,632.15 × 66,615.25
  4. Step 4: Simplify right side
    111,327.25x = 10,234,243,747.21
  5. Step 5: Solve for x
    x = 10,234,243,747.21/111,327.25
  6. Step 6: Final answer
    x = 91,929.37

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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.