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Finding the Fourth Proportional to 356,725.56, 535,140.18 and 190,422.84

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Solution

The fourth proportional to 356,725.56, 535,140.18 and 190,422.84 is: 285,661.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,725.56 : 535,140.18 = 190,422.84 : x
  2. Step 2: Convert to fraction form
    356,725.56/535,140.18 = 190,422.84/x
  3. Step 3: Cross multiply
    356,725.56x = 535,140.18 × 190,422.84
  4. Step 4: Simplify right side
    356,725.56x = 101,902,912,873.71
  5. Step 5: Solve for x
    x = 101,902,912,873.71/356,725.56
  6. Step 6: Final answer
    x = 285,661.93

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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.