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Finding the Fourth Proportional to 357,955.71, 535,765.25 and 263,160.80

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Solution

The fourth proportional to 357,955.71, 535,765.25 and 263,160.80 is: 393,882.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,955.71 : 535,765.25 = 263,160.80 : x
  2. Step 2: Convert to fraction form
    357,955.71/535,765.25 = 263,160.80/x
  3. Step 3: Cross multiply
    357,955.71x = 535,765.25 × 263,160.80
  4. Step 4: Simplify right side
    357,955.71x = 140,992,407,807.57
  5. Step 5: Solve for x
    x = 140,992,407,807.57/357,955.71
  6. Step 6: Final answer
    x = 393,882.27

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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.