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Finding the Fourth Proportional to 169,908.05, 234,479.12 and 93,432.98

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Solution

The fourth proportional to 169,908.05, 234,479.12 and 93,432.98 is: 128,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,908.05 : 234,479.12 = 93,432.98 : x
  2. Step 2: Convert to fraction form
    169,908.05/234,479.12 = 93,432.98/x
  3. Step 3: Cross multiply
    169,908.05x = 234,479.12 × 93,432.98
  4. Step 4: Simplify right side
    169,908.05x = 21,908,081,289.82
  5. Step 5: Solve for x
    x = 21,908,081,289.82/169,908.05
  6. Step 6: Final answer
    x = 128,940.81

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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.