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Finding the Fourth Proportional to 15,060.93, 20,784.20 and 8,346.67

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Solution

The fourth proportional to 15,060.93, 20,784.20 and 8,346.67 is: 11,518.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,060.93 : 20,784.20 = 8,346.67 : x
  2. Step 2: Convert to fraction form
    15,060.93/20,784.20 = 8,346.67/x
  3. Step 3: Cross multiply
    15,060.93x = 20,784.20 × 8,346.67
  4. Step 4: Simplify right side
    15,060.93x = 173,478,754.69
  5. Step 5: Solve for x
    x = 173,478,754.69/15,060.93
  6. Step 6: Final answer
    x = 11,518.47

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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.