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Finding the Fourth Proportional to 611,992.62, 911,837.87 and 577,614.35

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Solution

The fourth proportional to 611,992.62, 911,837.87 and 577,614.35 is: 860,615.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,992.62 : 911,837.87 = 577,614.35 : x
  2. Step 2: Convert to fraction form
    611,992.62/911,837.87 = 577,614.35/x
  3. Step 3: Cross multiply
    611,992.62x = 911,837.87 × 577,614.35
  4. Step 4: Simplify right side
    611,992.62x = 526,690,631,138.17
  5. Step 5: Solve for x
    x = 526,690,631,138.17/611,992.62
  6. Step 6: Final answer
    x = 860,615.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.