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Finding the Fourth Proportional to 178,888.92, 246,872.65 and 105,288.01

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Solution

The fourth proportional to 178,888.92, 246,872.65 and 105,288.01 is: 145,300.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,888.92 : 246,872.65 = 105,288.01 : x
  2. Step 2: Convert to fraction form
    178,888.92/246,872.65 = 105,288.01/x
  3. Step 3: Cross multiply
    178,888.92x = 246,872.65 × 105,288.01
  4. Step 4: Simplify right side
    178,888.92x = 25,992,729,730.26
  5. Step 5: Solve for x
    x = 25,992,729,730.26/178,888.92
  6. Step 6: Final answer
    x = 145,300.95

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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.