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Finding the Fourth Proportional to 154,333.44, 212,981.11 and 86,350.41

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Solution

The fourth proportional to 154,333.44, 212,981.11 and 86,350.41 is: 119,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,333.44 : 212,981.11 = 86,350.41 : x
  2. Step 2: Convert to fraction form
    154,333.44/212,981.11 = 86,350.41/x
  3. Step 3: Cross multiply
    154,333.44x = 212,981.11 × 86,350.41
  4. Step 4: Simplify right side
    154,333.44x = 18,391,005,954.88
  5. Step 5: Solve for x
    x = 18,391,005,954.88/154,333.44
  6. Step 6: Final answer
    x = 119,164.10

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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.