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Finding the Fourth Proportional to 27,312.80, 40,969.20 and 8,844.80

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Solution

The fourth proportional to 27,312.80, 40,969.20 and 8,844.80 is: 13,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,312.80 : 40,969.20 = 8,844.80 : x
  2. Step 2: Convert to fraction form
    27,312.80/40,969.20 = 8,844.80/x
  3. Step 3: Cross multiply
    27,312.80x = 40,969.20 × 8,844.80
  4. Step 4: Simplify right side
    27,312.80x = 362,364,380.16
  5. Step 5: Solve for x
    x = 362,364,380.16/27,312.80
  6. Step 6: Final answer
    x = 13,267.20

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1.5x scale

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.