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Finding the Fourth Proportional to 125,263.69, 187,424.71 and 87,896.68

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Solution

The fourth proportional to 125,263.69, 187,424.71 and 87,896.68 is: 131,514.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,263.69 : 187,424.71 = 87,896.68 : x
  2. Step 2: Convert to fraction form
    125,263.69/187,424.71 = 87,896.68/x
  3. Step 3: Cross multiply
    125,263.69x = 187,424.71 × 87,896.68
  4. Step 4: Simplify right side
    125,263.69x = 16,474,009,070.66
  5. Step 5: Solve for x
    x = 16,474,009,070.66/125,263.69
  6. Step 6: Final answer
    x = 131,514.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.