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Finding the Fourth Proportional to 125,269.80, 187,979.58 and 46,439.40

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Solution

The fourth proportional to 125,269.80, 187,979.58 and 46,439.40 is: 69,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,269.80 : 187,979.58 = 46,439.40 : x
  2. Step 2: Convert to fraction form
    125,269.80/187,979.58 = 46,439.40/x
  3. Step 3: Cross multiply
    125,269.80x = 187,979.58 × 46,439.40
  4. Step 4: Simplify right side
    125,269.80x = 8,729,658,907.45
  5. Step 5: Solve for x
    x = 8,729,658,907.45/125,269.80
  6. Step 6: Final answer
    x = 69,686.86

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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.