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Finding the Fourth Proportional to 188,239.92, 259,775.28 and 103,357.32

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Solution

The fourth proportional to 188,239.92, 259,775.28 and 103,357.32 is: 142,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,239.92 : 259,775.28 = 103,357.32 : x
  2. Step 2: Convert to fraction form
    188,239.92/259,775.28 = 103,357.32/x
  3. Step 3: Cross multiply
    188,239.92x = 259,775.28 × 103,357.32
  4. Step 4: Simplify right side
    188,239.92x = 26,849,676,743.05
  5. Step 5: Solve for x
    x = 26,849,676,743.05/188,239.92
  6. Step 6: Final answer
    x = 142,635.40

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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.