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Finding the Fourth Proportional to 8,368.66, 11,549.78 and 4,831.87

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Solution

The fourth proportional to 8,368.66, 11,549.78 and 4,831.87 is: 6,668.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.66 : 11,549.78 = 4,831.87 : x
  2. Step 2: Convert to fraction form
    8,368.66/11,549.78 = 4,831.87/x
  3. Step 3: Cross multiply
    8,368.66x = 11,549.78 × 4,831.87
  4. Step 4: Simplify right side
    8,368.66x = 55,806,953.58
  5. Step 5: Solve for x
    x = 55,806,953.58/8,368.66
  6. Step 6: Final answer
    x = 6,668.57

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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.