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Finding the Fourth Proportional to 30,393.86, 41,943.21 and 17,816.18

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Solution

The fourth proportional to 30,393.86, 41,943.21 and 17,816.18 is: 24,586.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.86 : 41,943.21 = 17,816.18 : x
  2. Step 2: Convert to fraction form
    30,393.86/41,943.21 = 17,816.18/x
  3. Step 3: Cross multiply
    30,393.86x = 41,943.21 × 17,816.18
  4. Step 4: Simplify right side
    30,393.86x = 747,267,779.14
  5. Step 5: Solve for x
    x = 747,267,779.14/30,393.86
  6. Step 6: Final answer
    x = 24,586.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.