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Finding the Fourth Proportional to 113,718.53, 170,247.42 and 66,188.54

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Solution

The fourth proportional to 113,718.53, 170,247.42 and 66,188.54 is: 99,090.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,718.53 : 170,247.42 = 66,188.54 : x
  2. Step 2: Convert to fraction form
    113,718.53/170,247.42 = 66,188.54/x
  3. Step 3: Cross multiply
    113,718.53x = 170,247.42 × 66,188.54
  4. Step 4: Simplify right side
    113,718.53x = 11,268,428,594.19
  5. Step 5: Solve for x
    x = 11,268,428,594.19/113,718.53
  6. Step 6: Final answer
    x = 99,090.52

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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.