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Finding the Fourth Proportional to 173,268, 239,110.56 and 93,780

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Solution

The fourth proportional to 173,268, 239,110.56 and 93,780 is: 129,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,268 : 239,110.56 = 93,780 : x
  2. Step 2: Convert to fraction form
    173,268/239,110.56 = 93,780/x
  3. Step 3: Cross multiply
    173,268x = 239,110.56 × 93,780
  4. Step 4: Simplify right side
    173,268x = 22,423,788,316.80
  5. Step 5: Solve for x
    x = 22,423,788,316.80/173,268
  6. Step 6: Final answer
    x = 129,416.79

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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.