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Finding the Fourth Proportional to 5,269.80, 7,905.98 and 1,572.32

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Solution

The fourth proportional to 5,269.80, 7,905.98 and 1,572.32 is: 2,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.80 : 7,905.98 = 1,572.32 : x
  2. Step 2: Convert to fraction form
    5,269.80/7,905.98 = 1,572.32/x
  3. Step 3: Cross multiply
    5,269.80x = 7,905.98 × 1,572.32
  4. Step 4: Simplify right side
    5,269.80x = 12,430,742.38
  5. Step 5: Solve for x
    x = 12,430,742.38/5,269.80
  6. Step 6: Final answer
    x = 2,358.86

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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.