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Finding the Fourth Proportional to 79,580.52, 119,157.36 and 42,062.64

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Solution

The fourth proportional to 79,580.52, 119,157.36 and 42,062.64 is: 62,981.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,580.52 : 119,157.36 = 42,062.64 : x
  2. Step 2: Convert to fraction form
    79,580.52/119,157.36 = 42,062.64/x
  3. Step 3: Cross multiply
    79,580.52x = 119,157.36 × 42,062.64
  4. Step 4: Simplify right side
    79,580.52x = 5,012,073,137.03
  5. Step 5: Solve for x
    x = 5,012,073,137.03/79,580.52
  6. Step 6: Final answer
    x = 62,981.16

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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.