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Finding the Fourth Proportional to 48,999.70, 73,485.15 and 19,407.70

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Solution

The fourth proportional to 48,999.70, 73,485.15 and 19,407.70 is: 29,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,999.70 : 73,485.15 = 19,407.70 : x
  2. Step 2: Convert to fraction form
    48,999.70/73,485.15 = 19,407.70/x
  3. Step 3: Cross multiply
    48,999.70x = 73,485.15 × 19,407.70
  4. Step 4: Simplify right side
    48,999.70x = 1,426,177,745.66
  5. Step 5: Solve for x
    x = 1,426,177,745.66/48,999.70
  6. Step 6: Final answer
    x = 29,105.85

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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.