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Finding the Fourth Proportional to 357,955.21, 535,764.49 and 263,160.30

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Solution

The fourth proportional to 357,955.21, 535,764.49 and 263,160.30 is: 393,881.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,955.21 : 535,764.49 = 263,160.30 : x
  2. Step 2: Convert to fraction form
    357,955.21/535,764.49 = 263,160.30/x
  3. Step 3: Cross multiply
    357,955.21x = 535,764.49 × 263,160.30
  4. Step 4: Simplify right side
    357,955.21x = 140,991,943,917.75
  5. Step 5: Solve for x
    x = 140,991,943,917.75/357,955.21
  6. Step 6: Final answer
    x = 393,881.52

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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.