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Finding the Fourth Proportional to 154,036.32, 212,546.16 and 86,966.88

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Solution

The fourth proportional to 154,036.32, 212,546.16 and 86,966.88 is: 120,000.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,036.32 : 212,546.16 = 86,966.88 : x
  2. Step 2: Convert to fraction form
    154,036.32/212,546.16 = 86,966.88/x
  3. Step 3: Cross multiply
    154,036.32x = 212,546.16 × 86,966.88
  4. Step 4: Simplify right side
    154,036.32x = 18,484,476,391.18
  5. Step 5: Solve for x
    x = 18,484,476,391.18/154,036.32
  6. Step 6: Final answer
    x = 120,000.77

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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.