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Finding the Fourth Proportional to 13,700.56, 20,557.86 and 5,808.46

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Solution

The fourth proportional to 13,700.56, 20,557.86 and 5,808.46 is: 8,715.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.56 : 20,557.86 = 5,808.46 : x
  2. Step 2: Convert to fraction form
    13,700.56/20,557.86 = 5,808.46/x
  3. Step 3: Cross multiply
    13,700.56x = 20,557.86 × 5,808.46
  4. Step 4: Simplify right side
    13,700.56x = 119,409,507.50
  5. Step 5: Solve for x
    x = 119,409,507.50/13,700.56
  6. Step 6: Final answer
    x = 8,715.67

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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.