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Finding the Fourth Proportional to 256,189.77, 384,519.03 and 129,917.18

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Solution

The fourth proportional to 256,189.77, 384,519.03 and 129,917.18 is: 194,994.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,189.77 : 384,519.03 = 129,917.18 : x
  2. Step 2: Convert to fraction form
    256,189.77/384,519.03 = 129,917.18/x
  3. Step 3: Cross multiply
    256,189.77x = 384,519.03 × 129,917.18
  4. Step 4: Simplify right side
    256,189.77x = 49,955,626,111.34
  5. Step 5: Solve for x
    x = 49,955,626,111.34/256,189.77
  6. Step 6: Final answer
    x = 194,994.62

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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.