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Finding the Fourth Proportional to 66,159.99, 99,164.66 and 26,670.87

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Solution

The fourth proportional to 66,159.99, 99,164.66 and 26,670.87 is: 39,975.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,159.99 : 99,164.66 = 26,670.87 : x
  2. Step 2: Convert to fraction form
    66,159.99/99,164.66 = 26,670.87/x
  3. Step 3: Cross multiply
    66,159.99x = 99,164.66 × 26,670.87
  4. Step 4: Simplify right side
    66,159.99x = 2,644,807,622.10
  5. Step 5: Solve for x
    x = 2,644,807,622.10/66,159.99
  6. Step 6: Final answer
    x = 39,975.94

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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.