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Finding the Fourth Proportional to 10,658.63, 15,990.26 and 4,084.82

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Solution

The fourth proportional to 10,658.63, 15,990.26 and 4,084.82 is: 6,128.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,658.63 : 15,990.26 = 4,084.82 : x
  2. Step 2: Convert to fraction form
    10,658.63/15,990.26 = 4,084.82/x
  3. Step 3: Cross multiply
    10,658.63x = 15,990.26 × 4,084.82
  4. Step 4: Simplify right side
    10,658.63x = 65,317,353.40
  5. Step 5: Solve for x
    x = 65,317,353.40/10,658.63
  6. Step 6: Final answer
    x = 6,128.12

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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.