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Finding the Fourth Proportional to 356,731.40, 535,106.84 and 104,005.78

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Solution

The fourth proportional to 356,731.40, 535,106.84 and 104,005.78 is: 156,011.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,731.40 : 535,106.84 = 104,005.78 : x
  2. Step 2: Convert to fraction form
    356,731.40/535,106.84 = 104,005.78/x
  3. Step 3: Cross multiply
    356,731.40x = 535,106.84 × 104,005.78
  4. Step 4: Simplify right side
    356,731.40x = 55,654,204,277.54
  5. Step 5: Solve for x
    x = 55,654,204,277.54/356,731.40
  6. Step 6: Final answer
    x = 156,011.51

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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.