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Finding the Fourth Proportional to 120,967.51, 166,935.82 and 66,523.19

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Solution

The fourth proportional to 120,967.51, 166,935.82 and 66,523.19 is: 91,802.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,967.51 : 166,935.82 = 66,523.19 : x
  2. Step 2: Convert to fraction form
    120,967.51/166,935.82 = 66,523.19/x
  3. Step 3: Cross multiply
    120,967.51x = 166,935.82 × 66,523.19
  4. Step 4: Simplify right side
    120,967.51x = 11,105,103,271.67
  5. Step 5: Solve for x
    x = 11,105,103,271.67/120,967.51
  6. Step 6: Final answer
    x = 91,802.36

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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.