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Finding the Fourth Proportional to 215,692.45, 323,539.50 and 65,932.16

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Solution

The fourth proportional to 215,692.45, 323,539.50 and 65,932.16 is: 98,898.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,692.45 : 323,539.50 = 65,932.16 : x
  2. Step 2: Convert to fraction form
    215,692.45/323,539.50 = 65,932.16/x
  3. Step 3: Cross multiply
    215,692.45x = 323,539.50 × 65,932.16
  4. Step 4: Simplify right side
    215,692.45x = 21,331,658,080.32
  5. Step 5: Solve for x
    x = 21,331,658,080.32/215,692.45
  6. Step 6: Final answer
    x = 98,898.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.