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Finding the Fourth Proportional to 14,591.25, 20,136.87 and 8,303.63

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Solution

The fourth proportional to 14,591.25, 20,136.87 and 8,303.63 is: 11,459.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,591.25 : 20,136.87 = 8,303.63 : x
  2. Step 2: Convert to fraction form
    14,591.25/20,136.87 = 8,303.63/x
  3. Step 3: Cross multiply
    14,591.25x = 20,136.87 × 8,303.63
  4. Step 4: Simplify right side
    14,591.25x = 167,209,017.15
  5. Step 5: Solve for x
    x = 167,209,017.15/14,591.25
  6. Step 6: Final answer
    x = 11,459.54

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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.