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Finding the Fourth Proportional to 109,603.86, 151,237.11 and 66,560.97

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Solution

The fourth proportional to 109,603.86, 151,237.11 and 66,560.97 is: 91,844.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,603.86 : 151,237.11 = 66,560.97 : x
  2. Step 2: Convert to fraction form
    109,603.86/151,237.11 = 66,560.97/x
  3. Step 3: Cross multiply
    109,603.86x = 151,237.11 × 66,560.97
  4. Step 4: Simplify right side
    109,603.86x = 10,066,488,741.60
  5. Step 5: Solve for x
    x = 10,066,488,741.60/109,603.86
  6. Step 6: Final answer
    x = 91,844.29

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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.