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Finding the Fourth Proportional to 125,087.84, 187,574.95 and 53,976.77

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Solution

The fourth proportional to 125,087.84, 187,574.95 and 53,976.77 is: 80,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,087.84 : 187,574.95 = 53,976.77 : x
  2. Step 2: Convert to fraction form
    125,087.84/187,574.95 = 53,976.77/x
  3. Step 3: Cross multiply
    125,087.84x = 187,574.95 × 53,976.77
  4. Step 4: Simplify right side
    125,087.84x = 10,124,690,267.91
  5. Step 5: Solve for x
    x = 10,124,690,267.91/125,087.84
  6. Step 6: Final answer
    x = 80,940.65

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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.