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Finding the Fourth Proportional to 109,692.64, 151,370.22 and 61,285.96

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Solution

The fourth proportional to 109,692.64, 151,370.22 and 61,285.96 is: 84,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,692.64 : 151,370.22 = 61,285.96 : x
  2. Step 2: Convert to fraction form
    109,692.64/151,370.22 = 61,285.96/x
  3. Step 3: Cross multiply
    109,692.64x = 151,370.22 × 61,285.96
  4. Step 4: Simplify right side
    109,692.64x = 9,276,869,248.11
  5. Step 5: Solve for x
    x = 9,276,869,248.11/109,692.64
  6. Step 6: Final answer
    x = 84,571.48

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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.