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Finding the Fourth Proportional to 154,064.98, 212,608.20 and 86,093.67

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Solution

The fourth proportional to 154,064.98, 212,608.20 and 86,093.67 is: 118,808.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,064.98 : 212,608.20 = 86,093.67 : x
  2. Step 2: Convert to fraction form
    154,064.98/212,608.20 = 86,093.67/x
  3. Step 3: Cross multiply
    154,064.98x = 212,608.20 × 86,093.67
  4. Step 4: Simplify right side
    154,064.98x = 18,304,219,147.05
  5. Step 5: Solve for x
    x = 18,304,219,147.05/154,064.98
  6. Step 6: Final answer
    x = 118,808.43

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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.