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Finding the Fourth Proportional to 188,558.76, 260,212.08 and 103,681.32

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Solution

The fourth proportional to 188,558.76, 260,212.08 and 103,681.32 is: 143,080.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,558.76 : 260,212.08 = 103,681.32 : x
  2. Step 2: Convert to fraction form
    188,558.76/260,212.08 = 103,681.32/x
  3. Step 3: Cross multiply
    188,558.76x = 260,212.08 × 103,681.32
  4. Step 4: Simplify right side
    188,558.76x = 26,979,131,934.35
  5. Step 5: Solve for x
    x = 26,979,131,934.35/188,558.76
  6. Step 6: Final answer
    x = 143,080.77

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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.