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Finding the Fourth Proportional to 58,336.80, 87,310.80 and 51,338.40

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Solution

The fourth proportional to 58,336.80, 87,310.80 and 51,338.40 is: 76,836.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,336.80 : 87,310.80 = 51,338.40 : x
  2. Step 2: Convert to fraction form
    58,336.80/87,310.80 = 51,338.40/x
  3. Step 3: Cross multiply
    58,336.80x = 87,310.80 × 51,338.40
  4. Step 4: Simplify right side
    58,336.80x = 4,482,396,774.72
  5. Step 5: Solve for x
    x = 4,482,396,774.72/58,336.80
  6. Step 6: Final answer
    x = 76,836.52

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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.