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Finding the Fourth Proportional to 188,505.69, 260,131.26 and 103,622.14

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Solution

The fourth proportional to 188,505.69, 260,131.26 and 103,622.14 is: 142,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,505.69 : 260,131.26 = 103,622.14 : x
  2. Step 2: Convert to fraction form
    188,505.69/260,131.26 = 103,622.14/x
  3. Step 3: Cross multiply
    188,505.69x = 260,131.26 × 103,622.14
  4. Step 4: Simplify right side
    188,505.69x = 26,955,357,842.10
  5. Step 5: Solve for x
    x = 26,955,357,842.10/188,505.69
  6. Step 6: Final answer
    x = 142,994.93

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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.