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Finding the Fourth Proportional to 122,388.81, 183,547.94 and 33,645.21

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Solution

The fourth proportional to 122,388.81, 183,547.94 and 33,645.21 is: 50,458.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,388.81 : 183,547.94 = 33,645.21 : x
  2. Step 2: Convert to fraction form
    122,388.81/183,547.94 = 33,645.21/x
  3. Step 3: Cross multiply
    122,388.81x = 183,547.94 × 33,645.21
  4. Step 4: Simplify right side
    122,388.81x = 6,175,508,818.14
  5. Step 5: Solve for x
    x = 6,175,508,818.14/122,388.81
  6. Step 6: Final answer
    x = 50,458.12

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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.