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Finding the Fourth Proportional to 52,989.36, 79,484.08 and 19,708.80

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Solution

The fourth proportional to 52,989.36, 79,484.08 and 19,708.80 is: 29,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,989.36 : 79,484.08 = 19,708.80 : x
  2. Step 2: Convert to fraction form
    52,989.36/79,484.08 = 19,708.80/x
  3. Step 3: Cross multiply
    52,989.36x = 79,484.08 × 19,708.80
  4. Step 4: Simplify right side
    52,989.36x = 1,566,535,835.90
  5. Step 5: Solve for x
    x = 1,566,535,835.90/52,989.36
  6. Step 6: Final answer
    x = 29,563.21

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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.