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Finding the Fourth Proportional to 16,521.90, 24,782.90 and 11,613.50

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Solution

The fourth proportional to 16,521.90, 24,782.90 and 11,613.50 is: 17,420.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,521.90 : 24,782.90 = 11,613.50 : x
  2. Step 2: Convert to fraction form
    16,521.90/24,782.90 = 11,613.50/x
  3. Step 3: Cross multiply
    16,521.90x = 24,782.90 × 11,613.50
  4. Step 4: Simplify right side
    16,521.90x = 287,816,027.17
  5. Step 5: Solve for x
    x = 287,816,027.17/16,521.90
  6. Step 6: Final answer
    x = 17,420.27

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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.