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Finding the Fourth Proportional to 19,889, 29,818.02 and 10,516.76

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Solution

The fourth proportional to 19,889, 29,818.02 and 10,516.76 is: 15,766.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,889 : 29,818.02 = 10,516.76 : x
  2. Step 2: Convert to fraction form
    19,889/29,818.02 = 10,516.76/x
  3. Step 3: Cross multiply
    19,889x = 29,818.02 × 10,516.76
  4. Step 4: Simplify right side
    19,889x = 313,588,960.02
  5. Step 5: Solve for x
    x = 313,588,960.02/19,889
  6. Step 6: Final answer
    x = 15,766.95

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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.