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Finding the Fourth Proportional to 105,798.17, 158,660.60 and 49,664.76

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Solution

The fourth proportional to 105,798.17, 158,660.60 and 49,664.76 is: 74,479.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,798.17 : 158,660.60 = 49,664.76 : x
  2. Step 2: Convert to fraction form
    105,798.17/158,660.60 = 49,664.76/x
  3. Step 3: Cross multiply
    105,798.17x = 158,660.60 × 49,664.76
  4. Step 4: Simplify right side
    105,798.17x = 7,879,840,372.13
  5. Step 5: Solve for x
    x = 7,879,840,372.13/105,798.17
  6. Step 6: Final answer
    x = 74,479.93

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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.