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Finding the Fourth Proportional to 617,636.88, 926,445.60 and 196,909.92

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Solution

The fourth proportional to 617,636.88, 926,445.60 and 196,909.92 is: 295,361.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,636.88 : 926,445.60 = 196,909.92 : x
  2. Step 2: Convert to fraction form
    617,636.88/926,445.60 = 196,909.92/x
  3. Step 3: Cross multiply
    617,636.88x = 926,445.60 × 196,909.92
  4. Step 4: Simplify right side
    617,636.88x = 182,426,328,980.35
  5. Step 5: Solve for x
    x = 182,426,328,980.35/617,636.88
  6. Step 6: Final answer
    x = 295,361.78

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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.