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Finding the Fourth Proportional to 25,611.56, 38,389.56 and 13,114.44

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Solution

The fourth proportional to 25,611.56, 38,389.56 and 13,114.44 is: 19,657.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,611.56 : 38,389.56 = 13,114.44 : x
  2. Step 2: Convert to fraction form
    25,611.56/38,389.56 = 13,114.44/x
  3. Step 3: Cross multiply
    25,611.56x = 38,389.56 × 13,114.44
  4. Step 4: Simplify right side
    25,611.56x = 503,457,581.25
  5. Step 5: Solve for x
    x = 503,457,581.25/25,611.56
  6. Step 6: Final answer
    x = 19,657.44

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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.