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Finding the Fourth Proportional to 113,208, 169,837.92 and 39,336

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Solution

The fourth proportional to 113,208, 169,837.92 and 39,336 is: 59,013.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,208 : 169,837.92 = 39,336 : x
  2. Step 2: Convert to fraction form
    113,208/169,837.92 = 39,336/x
  3. Step 3: Cross multiply
    113,208x = 169,837.92 × 39,336
  4. Step 4: Simplify right side
    113,208x = 6,680,744,421.12
  5. Step 5: Solve for x
    x = 6,680,744,421.12/113,208
  6. Step 6: Final answer
    x = 59,013.01

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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.