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Finding the Fourth Proportional to 172,616.64, 238,181.28 and 158,664.60

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Solution

The fourth proportional to 172,616.64, 238,181.28 and 158,664.60 is: 218,929.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,616.64 : 238,181.28 = 158,664.60 : x
  2. Step 2: Convert to fraction form
    172,616.64/238,181.28 = 158,664.60/x
  3. Step 3: Cross multiply
    172,616.64x = 238,181.28 × 158,664.60
  4. Step 4: Simplify right side
    172,616.64x = 37,790,937,518.69
  5. Step 5: Solve for x
    x = 37,790,937,518.69/172,616.64
  6. Step 6: Final answer
    x = 218,929.86

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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.