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Finding the Fourth Proportional to 125,756.79, 188,685.59 and 45,800.33

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Solution

The fourth proportional to 125,756.79, 188,685.59 and 45,800.33 is: 68,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,756.79 : 188,685.59 = 45,800.33 : x
  2. Step 2: Convert to fraction form
    125,756.79/188,685.59 = 45,800.33/x
  3. Step 3: Cross multiply
    125,756.79x = 188,685.59 × 45,800.33
  4. Step 4: Simplify right side
    125,756.79x = 8,641,861,344.82
  5. Step 5: Solve for x
    x = 8,641,861,344.82/125,756.79
  6. Step 6: Final answer
    x = 68,718.84

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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.