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Finding the Fourth Proportional to 125,643.42, 188,490.72 and 113,096.16

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Solution

The fourth proportional to 125,643.42, 188,490.72 and 113,096.16 is: 169,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,643.42 : 188,490.72 = 113,096.16 : x
  2. Step 2: Convert to fraction form
    125,643.42/188,490.72 = 113,096.16/x
  3. Step 3: Cross multiply
    125,643.42x = 188,490.72 × 113,096.16
  4. Step 4: Simplify right side
    125,643.42x = 21,317,576,627.64
  5. Step 5: Solve for x
    x = 21,317,576,627.64/125,643.42
  6. Step 6: Final answer
    x = 169,667.27

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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.