Home / 66,518.16-99,793.80-19,769.76

Finding the Fourth Proportional to 66,518.16, 99,793.80 and 19,769.76

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Solution

The fourth proportional to 66,518.16, 99,793.80 and 19,769.76 is: 29,659.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,518.16 : 99,793.80 = 19,769.76 : x
  2. Step 2: Convert to fraction form
    66,518.16/99,793.80 = 19,769.76/x
  3. Step 3: Cross multiply
    66,518.16x = 99,793.80 × 19,769.76
  4. Step 4: Simplify right side
    66,518.16x = 1,972,899,475.49
  5. Step 5: Solve for x
    x = 1,972,899,475.49/66,518.16
  6. Step 6: Final answer
    x = 29,659.56

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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.