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Finding the Fourth Proportional to 125,703.64, 188,300.70 and 58,139.80

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Solution

The fourth proportional to 125,703.64, 188,300.70 and 58,139.80 is: 87,091.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,703.64 : 188,300.70 = 58,139.80 : x
  2. Step 2: Convert to fraction form
    125,703.64/188,300.70 = 58,139.80/x
  3. Step 3: Cross multiply
    125,703.64x = 188,300.70 × 58,139.80
  4. Step 4: Simplify right side
    125,703.64x = 10,947,765,037.86
  5. Step 5: Solve for x
    x = 10,947,765,037.86/125,703.64
  6. Step 6: Final answer
    x = 87,091.87

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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.