Home / 66,520.66-99,797.55-19,772.26

Finding the Fourth Proportional to 66,520.66, 99,797.55 and 19,772.26

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Solution

The fourth proportional to 66,520.66, 99,797.55 and 19,772.26 is: 29,663.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,520.66 : 99,797.55 = 19,772.26 : x
  2. Step 2: Convert to fraction form
    66,520.66/99,797.55 = 19,772.26/x
  3. Step 3: Cross multiply
    66,520.66x = 99,797.55 × 19,772.26
  4. Step 4: Simplify right side
    66,520.66x = 1,973,223,105.96
  5. Step 5: Solve for x
    x = 1,973,223,105.96/66,520.66
  6. Step 6: Final answer
    x = 29,663.31

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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.