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Finding the Fourth Proportional to 171,505.84, 236,686.50 and 103,521.73

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Solution

The fourth proportional to 171,505.84, 236,686.50 and 103,521.73 is: 142,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,505.84 : 236,686.50 = 103,521.73 : x
  2. Step 2: Convert to fraction form
    171,505.84/236,686.50 = 103,521.73/x
  3. Step 3: Cross multiply
    171,505.84x = 236,686.50 × 103,521.73
  4. Step 4: Simplify right side
    171,505.84x = 24,502,195,947.65
  5. Step 5: Solve for x
    x = 24,502,195,947.65/171,505.84
  6. Step 6: Final answer
    x = 142,865.08

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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.