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Finding the Fourth Proportional to 15,656.63, 21,606.21 and 8,583.17

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Solution

The fourth proportional to 15,656.63, 21,606.21 and 8,583.17 is: 11,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.63 : 21,606.21 = 8,583.17 : x
  2. Step 2: Convert to fraction form
    15,656.63/21,606.21 = 8,583.17/x
  3. Step 3: Cross multiply
    15,656.63x = 21,606.21 × 8,583.17
  4. Step 4: Simplify right side
    15,656.63x = 185,449,665.45
  5. Step 5: Solve for x
    x = 185,449,665.45/15,656.63
  6. Step 6: Final answer
    x = 11,844.80

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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.