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Finding the Fourth Proportional to 256,401.90, 384,680.52 and 181,666.62

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Solution

The fourth proportional to 256,401.90, 384,680.52 and 181,666.62 is: 272,554.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,401.90 : 384,680.52 = 181,666.62 : x
  2. Step 2: Convert to fraction form
    256,401.90/384,680.52 = 181,666.62/x
  3. Step 3: Cross multiply
    256,401.90x = 384,680.52 × 181,666.62
  4. Step 4: Simplify right side
    256,401.90x = 69,883,609,848.24
  5. Step 5: Solve for x
    x = 69,883,609,848.24/256,401.90
  6. Step 6: Final answer
    x = 272,554.96

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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.