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Finding the Fourth Proportional to 154,096.16, 212,654.16 and 86,118.56

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Solution

The fourth proportional to 154,096.16, 212,654.16 and 86,118.56 is: 118,844.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,096.16 : 212,654.16 = 86,118.56 : x
  2. Step 2: Convert to fraction form
    154,096.16/212,654.16 = 86,118.56/x
  3. Step 3: Cross multiply
    154,096.16x = 212,654.16 × 86,118.56
  4. Step 4: Simplify right side
    154,096.16x = 18,313,470,037.21
  5. Step 5: Solve for x
    x = 18,313,470,037.21/154,096.16
  6. Step 6: Final answer
    x = 118,844.43

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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.