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Finding the Fourth Proportional to 55,328.70, 82,972.80 and 17,898.60

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Solution

The fourth proportional to 55,328.70, 82,972.80 and 17,898.60 is: 26,841.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,328.70 : 82,972.80 = 17,898.60 : x
  2. Step 2: Convert to fraction form
    55,328.70/82,972.80 = 17,898.60/x
  3. Step 3: Cross multiply
    55,328.70x = 82,972.80 × 17,898.60
  4. Step 4: Simplify right side
    55,328.70x = 1,485,096,958.08
  5. Step 5: Solve for x
    x = 1,485,096,958.08/55,328.70
  6. Step 6: Final answer
    x = 26,841.35

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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.