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Finding the Fourth Proportional to 10,442.70, 15,667.52 and 6,946.49

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Solution

The fourth proportional to 10,442.70, 15,667.52 and 6,946.49 is: 10,422.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,442.70 : 15,667.52 = 6,946.49 : x
  2. Step 2: Convert to fraction form
    10,442.70/15,667.52 = 6,946.49/x
  3. Step 3: Cross multiply
    10,442.70x = 15,667.52 × 6,946.49
  4. Step 4: Simplify right side
    10,442.70x = 108,834,157.93
  5. Step 5: Solve for x
    x = 108,834,157.93/10,442.70
  6. Step 6: Final answer
    x = 10,422.03

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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.