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Finding the Fourth Proportional to 519,653.18, 780,196.90 and 359,335.82

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Solution

The fourth proportional to 519,653.18, 780,196.90 and 359,335.82 is: 539,499.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,653.18 : 780,196.90 = 359,335.82 : x
  2. Step 2: Convert to fraction form
    519,653.18/780,196.90 = 359,335.82/x
  3. Step 3: Cross multiply
    519,653.18x = 780,196.90 × 359,335.82
  4. Step 4: Simplify right side
    519,653.18x = 280,352,692,822.96
  5. Step 5: Solve for x
    x = 280,352,692,822.96/519,653.18
  6. Step 6: Final answer
    x = 539,499.62

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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.