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Finding the Fourth Proportional to 118,031.77, 177,046.26 and 70,660.09

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Solution

The fourth proportional to 118,031.77, 177,046.26 and 70,660.09 is: 105,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,031.77 : 177,046.26 = 70,660.09 : x
  2. Step 2: Convert to fraction form
    118,031.77/177,046.26 = 70,660.09/x
  3. Step 3: Cross multiply
    118,031.77x = 177,046.26 × 70,660.09
  4. Step 4: Simplify right side
    118,031.77x = 12,510,104,665.76
  5. Step 5: Solve for x
    x = 12,510,104,665.76/118,031.77
  6. Step 6: Final answer
    x = 105,989.30

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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.