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Finding the Fourth Proportional to 619,618.53, 855,158.69 and 347,702.50

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Solution

The fourth proportional to 619,618.53, 855,158.69 and 347,702.50 is: 479,877.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,618.53 : 855,158.69 = 347,702.50 : x
  2. Step 2: Convert to fraction form
    619,618.53/855,158.69 = 347,702.50/x
  3. Step 3: Cross multiply
    619,618.53x = 855,158.69 × 347,702.50
  4. Step 4: Simplify right side
    619,618.53x = 297,340,815,670.66
  5. Step 5: Solve for x
    x = 297,340,815,670.66/619,618.53
  6. Step 6: Final answer
    x = 479,877.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.