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Finding the Fourth Proportional to 273,961.51, 378,065.74 and 153,102.73

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Solution

The fourth proportional to 273,961.51, 378,065.74 and 153,102.73 is: 211,281.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,961.51 : 378,065.74 = 153,102.73 : x
  2. Step 2: Convert to fraction form
    273,961.51/378,065.74 = 153,102.73/x
  3. Step 3: Cross multiply
    273,961.51x = 378,065.74 × 153,102.73
  4. Step 4: Simplify right side
    273,961.51x = 57,882,896,913.47
  5. Step 5: Solve for x
    x = 57,882,896,913.47/273,961.51
  6. Step 6: Final answer
    x = 211,281.13

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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.