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Finding the Fourth Proportional to 8,929.61, 12,322.03 and 4,950.38

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Solution

The fourth proportional to 8,929.61, 12,322.03 and 4,950.38 is: 6,831.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.61 : 12,322.03 = 4,950.38 : x
  2. Step 2: Convert to fraction form
    8,929.61/12,322.03 = 4,950.38/x
  3. Step 3: Cross multiply
    8,929.61x = 12,322.03 × 4,950.38
  4. Step 4: Simplify right side
    8,929.61x = 60,998,706.12
  5. Step 5: Solve for x
    x = 60,998,706.12/8,929.61
  6. Step 6: Final answer
    x = 6,831.06

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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.