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Finding the Fourth Proportional to 8,929.64, 12,322.73 and 4,950.72

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Solution

The fourth proportional to 8,929.64, 12,322.73 and 4,950.72 is: 6,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.64 : 12,322.73 = 4,950.72 : x
  2. Step 2: Convert to fraction form
    8,929.64/12,322.73 = 4,950.72/x
  3. Step 3: Cross multiply
    8,929.64x = 12,322.73 × 4,950.72
  4. Step 4: Simplify right side
    8,929.64x = 61,006,398.24
  5. Step 5: Solve for x
    x = 61,006,398.24/8,929.64
  6. Step 6: Final answer
    x = 6,831.90

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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.