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Finding the Fourth Proportional to 178,469.70, 246,288.16 and 103,018.20

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Solution

The fourth proportional to 178,469.70, 246,288.16 and 103,018.20 is: 142,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,469.70 : 246,288.16 = 103,018.20 : x
  2. Step 2: Convert to fraction form
    178,469.70/246,288.16 = 103,018.20/x
  3. Step 3: Cross multiply
    178,469.70x = 246,288.16 × 103,018.20
  4. Step 4: Simplify right side
    178,469.70x = 25,372,162,924.51
  5. Step 5: Solve for x
    x = 25,372,162,924.51/178,469.70
  6. Step 6: Final answer
    x = 142,165.10

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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.