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Finding the Fourth Proportional to 221,089.54, 305,016.96 and 136,058.98

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Solution

The fourth proportional to 221,089.54, 305,016.96 and 136,058.98 is: 187,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,089.54 : 305,016.96 = 136,058.98 : x
  2. Step 2: Convert to fraction form
    221,089.54/305,016.96 = 136,058.98/x
  3. Step 3: Cross multiply
    221,089.54x = 305,016.96 × 136,058.98
  4. Step 4: Simplify right side
    221,089.54x = 41,500,296,460.30
  5. Step 5: Solve for x
    x = 41,500,296,460.30/221,089.54
  6. Step 6: Final answer
    x = 187,708.10

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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.