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Finding the Fourth Proportional to 136,063.61, 204,113.89 and 47,305.63

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Solution

The fourth proportional to 136,063.61, 204,113.89 and 47,305.63 is: 70,964.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,063.61 : 204,113.89 = 47,305.63 : x
  2. Step 2: Convert to fraction form
    136,063.61/204,113.89 = 47,305.63/x
  3. Step 3: Cross multiply
    136,063.61x = 204,113.89 × 47,305.63
  4. Step 4: Simplify right side
    136,063.61x = 9,655,736,472.48
  5. Step 5: Solve for x
    x = 9,655,736,472.48/136,063.61
  6. Step 6: Final answer
    x = 70,964.87

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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.