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Finding the Fourth Proportional to 52,193.80, 78,297.90 and 18,905.80

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Solution

The fourth proportional to 52,193.80, 78,297.90 and 18,905.80 is: 28,361.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,193.80 : 78,297.90 = 18,905.80 : x
  2. Step 2: Convert to fraction form
    52,193.80/78,297.90 = 18,905.80/x
  3. Step 3: Cross multiply
    52,193.80x = 78,297.90 × 18,905.80
  4. Step 4: Simplify right side
    52,193.80x = 1,480,284,437.82
  5. Step 5: Solve for x
    x = 1,480,284,437.82/52,193.80
  6. Step 6: Final answer
    x = 28,361.31

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1.5x scale

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.