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Finding the Fourth Proportional to 188,242.92, 259,779.42 and 103,360.32

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Solution

The fourth proportional to 188,242.92, 259,779.42 and 103,360.32 is: 142,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,242.92 : 259,779.42 = 103,360.32 : x
  2. Step 2: Convert to fraction form
    188,242.92/259,779.42 = 103,360.32/x
  3. Step 3: Cross multiply
    188,242.92x = 259,779.42 × 103,360.32
  4. Step 4: Simplify right side
    188,242.92x = 26,850,883,980.61
  5. Step 5: Solve for x
    x = 26,850,883,980.61/188,242.92
  6. Step 6: Final answer
    x = 142,639.54

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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.