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Finding the Fourth Proportional to 16,211.80, 22,368.18 and 12,701.80

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Solution

The fourth proportional to 16,211.80, 22,368.18 and 12,701.80 is: 17,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,211.80 : 22,368.18 = 12,701.80 : x
  2. Step 2: Convert to fraction form
    16,211.80/22,368.18 = 12,701.80/x
  3. Step 3: Cross multiply
    16,211.80x = 22,368.18 × 12,701.80
  4. Step 4: Simplify right side
    16,211.80x = 284,116,148.72
  5. Step 5: Solve for x
    x = 284,116,148.72/16,211.80
  6. Step 6: Final answer
    x = 17,525.27

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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.