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Finding the Fourth Proportional to 72,461.70, 108,692.55 and 48,960.90

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Solution

The fourth proportional to 72,461.70, 108,692.55 and 48,960.90 is: 73,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,461.70 : 108,692.55 = 48,960.90 : x
  2. Step 2: Convert to fraction form
    72,461.70/108,692.55 = 48,960.90/x
  3. Step 3: Cross multiply
    72,461.70x = 108,692.55 × 48,960.90
  4. Step 4: Simplify right side
    72,461.70x = 5,321,685,071.30
  5. Step 5: Solve for x
    x = 5,321,685,071.30/72,461.70
  6. Step 6: Final answer
    x = 73,441.35

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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.