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Finding the Fourth Proportional to 14,959.61, 20,636.67 and 11,416.67

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Solution

The fourth proportional to 14,959.61, 20,636.67 and 11,416.67 is: 15,749.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,959.61 : 20,636.67 = 11,416.67 : x
  2. Step 2: Convert to fraction form
    14,959.61/20,636.67 = 11,416.67/x
  3. Step 3: Cross multiply
    14,959.61x = 20,636.67 × 11,416.67
  4. Step 4: Simplify right side
    14,959.61x = 235,601,948.11
  5. Step 5: Solve for x
    x = 235,601,948.11/14,959.61
  6. Step 6: Final answer
    x = 15,749.21

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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.