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Finding the Fourth Proportional to 28,700.70, 43,056.96 and 12,050.94

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Solution

The fourth proportional to 28,700.70, 43,056.96 and 12,050.94 is: 18,078.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700.70 : 43,056.96 = 12,050.94 : x
  2. Step 2: Convert to fraction form
    28,700.70/43,056.96 = 12,050.94/x
  3. Step 3: Cross multiply
    28,700.70x = 43,056.96 × 12,050.94
  4. Step 4: Simplify right side
    28,700.70x = 518,876,841.54
  5. Step 5: Solve for x
    x = 518,876,841.54/28,700.70
  6. Step 6: Final answer
    x = 18,078.89

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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.