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Finding the Fourth Proportional to 15,656.69, 21,606.19 and 8,583.16

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Solution

The fourth proportional to 15,656.69, 21,606.19 and 8,583.16 is: 11,844.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.69 : 21,606.19 = 8,583.16 : x
  2. Step 2: Convert to fraction form
    15,656.69/21,606.19 = 8,583.16/x
  3. Step 3: Cross multiply
    15,656.69x = 21,606.19 × 8,583.16
  4. Step 4: Simplify right side
    15,656.69x = 185,449,385.76
  5. Step 5: Solve for x
    x = 185,449,385.76/15,656.69
  6. Step 6: Final answer
    x = 11,844.74

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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.