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Finding the Fourth Proportional to 5,316.88, 7,321.98 and 5,300.68

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Solution

The fourth proportional to 5,316.88, 7,321.98 and 5,300.68 is: 7,299.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.88 : 7,321.98 = 5,300.68 : x
  2. Step 2: Convert to fraction form
    5,316.88/7,321.98 = 5,300.68/x
  3. Step 3: Cross multiply
    5,316.88x = 7,321.98 × 5,300.68
  4. Step 4: Simplify right side
    5,316.88x = 38,811,472.95
  5. Step 5: Solve for x
    x = 38,811,472.95/5,316.88
  6. Step 6: Final answer
    x = 7,299.67

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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.