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Finding the Fourth Proportional to 98,372.76, 135,752.81 and 55,930.38

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Solution

The fourth proportional to 98,372.76, 135,752.81 and 55,930.38 is: 77,183.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,372.76 : 135,752.81 = 55,930.38 : x
  2. Step 2: Convert to fraction form
    98,372.76/135,752.81 = 55,930.38/x
  3. Step 3: Cross multiply
    98,372.76x = 135,752.81 × 55,930.38
  4. Step 4: Simplify right side
    98,372.76x = 7,592,705,969.72
  5. Step 5: Solve for x
    x = 7,592,705,969.72/98,372.76
  6. Step 6: Final answer
    x = 77,183.01

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1.5x scale

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.