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Finding the Fourth Proportional to 25,281.72, 37,927.08 and 8,643.60

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Solution

The fourth proportional to 25,281.72, 37,927.08 and 8,643.60 is: 12,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,281.72 : 37,927.08 = 8,643.60 : x
  2. Step 2: Convert to fraction form
    25,281.72/37,927.08 = 8,643.60/x
  3. Step 3: Cross multiply
    25,281.72x = 37,927.08 × 8,643.60
  4. Step 4: Simplify right side
    25,281.72x = 327,826,508.69
  5. Step 5: Solve for x
    x = 327,826,508.69/25,281.72
  6. Step 6: Final answer
    x = 12,966.94

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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.