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Finding the Fourth Proportional to 519,274.50, 778,619.56 and 357,358.74

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Solution

The fourth proportional to 519,274.50, 778,619.56 and 357,358.74 is: 535,837.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,274.50 : 778,619.56 = 357,358.74 : x
  2. Step 2: Convert to fraction form
    519,274.50/778,619.56 = 357,358.74/x
  3. Step 3: Cross multiply
    519,274.50x = 778,619.56 × 357,358.74
  4. Step 4: Simplify right side
    519,274.50x = 278,246,504,900.95
  5. Step 5: Solve for x
    x = 278,246,504,900.95/519,274.50
  6. Step 6: Final answer
    x = 535,837.03

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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.