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Finding the Fourth Proportional to 8,422.29, 11,619.06 and 5,063.16

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Solution

The fourth proportional to 8,422.29, 11,619.06 and 5,063.16 is: 6,984.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.29 : 11,619.06 = 5,063.16 : x
  2. Step 2: Convert to fraction form
    8,422.29/11,619.06 = 5,063.16/x
  3. Step 3: Cross multiply
    8,422.29x = 11,619.06 × 5,063.16
  4. Step 4: Simplify right side
    8,422.29x = 58,829,159.83
  5. Step 5: Solve for x
    x = 58,829,159.83/8,422.29
  6. Step 6: Final answer
    x = 6,984.94

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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.