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Finding the Fourth Proportional to 251,243.60, 346,712.22 and 138,063.92

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Solution

The fourth proportional to 251,243.60, 346,712.22 and 138,063.92 is: 190,526.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,243.60 : 346,712.22 = 138,063.92 : x
  2. Step 2: Convert to fraction form
    251,243.60/346,712.22 = 138,063.92/x
  3. Step 3: Cross multiply
    251,243.60x = 346,712.22 × 138,063.92
  4. Step 4: Simplify right side
    251,243.60x = 47,868,448,205.10
  5. Step 5: Solve for x
    x = 47,868,448,205.10/251,243.60
  6. Step 6: Final answer
    x = 190,526.04

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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.