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Finding the Fourth Proportional to 10,605.70, 14,636.19 and 5,890.69

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Solution

The fourth proportional to 10,605.70, 14,636.19 and 5,890.69 is: 8,129.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,605.70 : 14,636.19 = 5,890.69 : x
  2. Step 2: Convert to fraction form
    10,605.70/14,636.19 = 5,890.69/x
  3. Step 3: Cross multiply
    10,605.70x = 14,636.19 × 5,890.69
  4. Step 4: Simplify right side
    10,605.70x = 86,217,258.07
  5. Step 5: Solve for x
    x = 86,217,258.07/10,605.70
  6. Step 6: Final answer
    x = 8,129.33

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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.