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Finding the Fourth Proportional to 47,140.79, 65,055.43 and 25,631.79

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Solution

The fourth proportional to 47,140.79, 65,055.43 and 25,631.79 is: 35,372.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,140.79 : 65,055.43 = 25,631.79 : x
  2. Step 2: Convert to fraction form
    47,140.79/65,055.43 = 25,631.79/x
  3. Step 3: Cross multiply
    47,140.79x = 65,055.43 × 25,631.79
  4. Step 4: Simplify right side
    47,140.79x = 1,667,487,202.05
  5. Step 5: Solve for x
    x = 1,667,487,202.05/47,140.79
  6. Step 6: Final answer
    x = 35,372.50

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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.