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Finding the Fourth Proportional to 14,651.55, 20,219.18 and 7,937.16

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Solution

The fourth proportional to 14,651.55, 20,219.18 and 7,937.16 is: 10,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.55 : 20,219.18 = 7,937.16 : x
  2. Step 2: Convert to fraction form
    14,651.55/20,219.18 = 7,937.16/x
  3. Step 3: Cross multiply
    14,651.55x = 20,219.18 × 7,937.16
  4. Step 4: Simplify right side
    14,651.55x = 160,482,866.73
  5. Step 5: Solve for x
    x = 160,482,866.73/14,651.55
  6. Step 6: Final answer
    x = 10,953.30

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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.