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Finding the Fourth Proportional to 27,648.66, 41,465.64 and 7,921.92

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Solution

The fourth proportional to 27,648.66, 41,465.64 and 7,921.92 is: 11,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,648.66 : 41,465.64 = 7,921.92 : x
  2. Step 2: Convert to fraction form
    27,648.66/41,465.64 = 7,921.92/x
  3. Step 3: Cross multiply
    27,648.66x = 41,465.64 × 7,921.92
  4. Step 4: Simplify right side
    27,648.66x = 328,487,482.83
  5. Step 5: Solve for x
    x = 328,487,482.83/27,648.66
  6. Step 6: Final answer
    x = 11,880.77

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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.