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Finding the Fourth Proportional to 15,235.80, 21,045.48 and 11,692.92

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Solution

The fourth proportional to 15,235.80, 21,045.48 and 11,692.92 is: 16,151.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.80 : 21,045.48 = 11,692.92 : x
  2. Step 2: Convert to fraction form
    15,235.80/21,045.48 = 11,692.92/x
  3. Step 3: Cross multiply
    15,235.80x = 21,045.48 × 11,692.92
  4. Step 4: Simplify right side
    15,235.80x = 246,083,114.00
  5. Step 5: Solve for x
    x = 246,083,114.00/15,235.80
  6. Step 6: Final answer
    x = 16,151.64

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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.