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Finding the Fourth Proportional to 8,274.52, 11,417.82 and 4,917.40

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Solution

The fourth proportional to 8,274.52, 11,417.82 and 4,917.40 is: 6,785.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,274.52 : 11,417.82 = 4,917.40 : x
  2. Step 2: Convert to fraction form
    8,274.52/11,417.82 = 4,917.40/x
  3. Step 3: Cross multiply
    8,274.52x = 11,417.82 × 4,917.40
  4. Step 4: Simplify right side
    8,274.52x = 56,145,988.07
  5. Step 5: Solve for x
    x = 56,145,988.07/8,274.52
  6. Step 6: Final answer
    x = 6,785.41

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1.5x scale

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.