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Finding the Fourth Proportional to 192,407.77, 288,654.25 and 66,045.18

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Solution

The fourth proportional to 192,407.77, 288,654.25 and 66,045.18 is: 99,082.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,407.77 : 288,654.25 = 66,045.18 : x
  2. Step 2: Convert to fraction form
    192,407.77/288,654.25 = 66,045.18/x
  3. Step 3: Cross multiply
    192,407.77x = 288,654.25 × 66,045.18
  4. Step 4: Simplify right side
    192,407.77x = 19,064,221,899.02
  5. Step 5: Solve for x
    x = 19,064,221,899.02/192,407.77
  6. Step 6: Final answer
    x = 99,082.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.