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Finding the Fourth Proportional to 13,586.55, 20,392.05 and 6,927.48

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Solution

The fourth proportional to 13,586.55, 20,392.05 and 6,927.48 is: 10,397.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.55 : 20,392.05 = 6,927.48 : x
  2. Step 2: Convert to fraction form
    13,586.55/20,392.05 = 6,927.48/x
  3. Step 3: Cross multiply
    13,586.55x = 20,392.05 × 6,927.48
  4. Step 4: Simplify right side
    13,586.55x = 141,265,518.53
  5. Step 5: Solve for x
    x = 141,265,518.53/13,586.55
  6. Step 6: Final answer
    x = 10,397.45

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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.