Home / 66,654.20-99,995.70-19,911.80

Finding the Fourth Proportional to 66,654.20, 99,995.70 and 19,911.80

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Solution

The fourth proportional to 66,654.20, 99,995.70 and 19,911.80 is: 29,872.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,654.20 : 99,995.70 = 19,911.80 : x
  2. Step 2: Convert to fraction form
    66,654.20/99,995.70 = 19,911.80/x
  3. Step 3: Cross multiply
    66,654.20x = 99,995.70 × 19,911.80
  4. Step 4: Simplify right side
    66,654.20x = 1,991,094,379.26
  5. Step 5: Solve for x
    x = 1,991,094,379.26/66,654.20
  6. Step 6: Final answer
    x = 29,872.00

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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.