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Finding the Fourth Proportional to 171,181.17, 256,832.55 and 76,402.74

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Solution

The fourth proportional to 171,181.17, 256,832.55 and 76,402.74 is: 114,631.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,181.17 : 256,832.55 = 76,402.74 : x
  2. Step 2: Convert to fraction form
    171,181.17/256,832.55 = 76,402.74/x
  3. Step 3: Cross multiply
    171,181.17x = 256,832.55 × 76,402.74
  4. Step 4: Simplify right side
    171,181.17x = 19,622,710,541.19
  5. Step 5: Solve for x
    x = 19,622,710,541.19/171,181.17
  6. Step 6: Final answer
    x = 114,631.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.