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Finding the Fourth Proportional to 114,158.44, 157,570.31 and 66,421.01

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Solution

The fourth proportional to 114,158.44, 157,570.31 and 66,421.01 is: 91,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,158.44 : 157,570.31 = 66,421.01 : x
  2. Step 2: Convert to fraction form
    114,158.44/157,570.31 = 66,421.01/x
  3. Step 3: Cross multiply
    114,158.44x = 157,570.31 × 66,421.01
  4. Step 4: Simplify right side
    114,158.44x = 10,465,979,696.19
  5. Step 5: Solve for x
    x = 10,465,979,696.19/114,158.44
  6. Step 6: Final answer
    x = 91,679.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.