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Finding the Fourth Proportional to 15,692.52, 21,655.59 and 8,522.58

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Solution

The fourth proportional to 15,692.52, 21,655.59 and 8,522.58 is: 11,761.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,692.52 : 21,655.59 = 8,522.58 : x
  2. Step 2: Convert to fraction form
    15,692.52/21,655.59 = 8,522.58/x
  3. Step 3: Cross multiply
    15,692.52x = 21,655.59 × 8,522.58
  4. Step 4: Simplify right side
    15,692.52x = 184,561,498.22
  5. Step 5: Solve for x
    x = 184,561,498.22/15,692.52
  6. Step 6: Final answer
    x = 11,761.11

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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.