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Finding the Fourth Proportional to 125,698.61, 188,374.57 and 92,436.77

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Solution

The fourth proportional to 125,698.61, 188,374.57 and 92,436.77 is: 138,527.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,698.61 : 188,374.57 = 92,436.77 : x
  2. Step 2: Convert to fraction form
    125,698.61/188,374.57 = 92,436.77/x
  3. Step 3: Cross multiply
    125,698.61x = 188,374.57 × 92,436.77
  4. Step 4: Simplify right side
    125,698.61x = 17,412,736,800.94
  5. Step 5: Solve for x
    x = 17,412,736,800.94/125,698.61
  6. Step 6: Final answer
    x = 138,527.68

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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.