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Finding the Fourth Proportional to 221,083.49, 305,008.59 and 136,052.93

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Solution

The fourth proportional to 221,083.49, 305,008.59 and 136,052.93 is: 187,699.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,083.49 : 305,008.59 = 136,052.93 : x
  2. Step 2: Convert to fraction form
    221,083.49/305,008.59 = 136,052.93/x
  3. Step 3: Cross multiply
    221,083.49x = 305,008.59 × 136,052.93
  4. Step 4: Simplify right side
    221,083.49x = 41,497,310,819.63
  5. Step 5: Solve for x
    x = 41,497,310,819.63/221,083.49
  6. Step 6: Final answer
    x = 187,699.73

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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.