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Finding the Fourth Proportional to 111,600.82, 153,985.17 and 66,294.08

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Solution

The fourth proportional to 111,600.82, 153,985.17 and 66,294.08 is: 91,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,600.82 : 153,985.17 = 66,294.08 : x
  2. Step 2: Convert to fraction form
    111,600.82/153,985.17 = 66,294.08/x
  3. Step 3: Cross multiply
    111,600.82x = 153,985.17 × 66,294.08
  4. Step 4: Simplify right side
    111,600.82x = 10,208,305,178.79
  5. Step 5: Solve for x
    x = 10,208,305,178.79/111,600.82
  6. Step 6: Final answer
    x = 91,471.60

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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.