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Finding the Fourth Proportional to 66,146.85, 99,186.26 and 19,393.65

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Solution

The fourth proportional to 66,146.85, 99,186.26 and 19,393.65 is: 29,080.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,146.85 : 99,186.26 = 19,393.65 : x
  2. Step 2: Convert to fraction form
    66,146.85/99,186.26 = 19,393.65/x
  3. Step 3: Cross multiply
    66,146.85x = 99,186.26 × 19,393.65
  4. Step 4: Simplify right side
    66,146.85x = 1,923,583,514.28
  5. Step 5: Solve for x
    x = 1,923,583,514.28/66,146.85
  6. Step 6: Final answer
    x = 29,080.50

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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.