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Finding the Fourth Proportional to 188,508.50, 260,135.14 and 103,624.95

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Solution

The fourth proportional to 188,508.50, 260,135.14 and 103,624.95 is: 142,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,508.50 : 260,135.14 = 103,624.95 : x
  2. Step 2: Convert to fraction form
    188,508.50/260,135.14 = 103,624.95/x
  3. Step 3: Cross multiply
    188,508.50x = 260,135.14 × 103,624.95
  4. Step 4: Simplify right side
    188,508.50x = 26,956,490,875.74
  5. Step 5: Solve for x
    x = 26,956,490,875.74/188,508.50
  6. Step 6: Final answer
    x = 142,998.81

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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.