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Finding the Fourth Proportional to 172,957.40, 238,644.82 and 105,010.08

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Solution

The fourth proportional to 172,957.40, 238,644.82 and 105,010.08 is: 144,891.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,957.40 : 238,644.82 = 105,010.08 : x
  2. Step 2: Convert to fraction form
    172,957.40/238,644.82 = 105,010.08/x
  3. Step 3: Cross multiply
    172,957.40x = 238,644.82 × 105,010.08
  4. Step 4: Simplify right side
    172,957.40x = 25,060,111,639.79
  5. Step 5: Solve for x
    x = 25,060,111,639.79/172,957.40
  6. Step 6: Final answer
    x = 144,891.82

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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.