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Finding the Fourth Proportional to 185,611.84, 256,128.96 and 105,035.20

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Solution

The fourth proportional to 185,611.84, 256,128.96 and 105,035.20 is: 144,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,611.84 : 256,128.96 = 105,035.20 : x
  2. Step 2: Convert to fraction form
    185,611.84/256,128.96 = 105,035.20/x
  3. Step 3: Cross multiply
    185,611.84x = 256,128.96 × 105,035.20
  4. Step 4: Simplify right side
    185,611.84x = 26,902,556,539.39
  5. Step 5: Solve for x
    x = 26,902,556,539.39/185,611.84
  6. Step 6: Final answer
    x = 144,939.87

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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.