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Finding the Fourth Proportional to 607,961.20, 911,941.80 and 558,194.80

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Solution

The fourth proportional to 607,961.20, 911,941.80 and 558,194.80 is: 837,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,961.20 : 911,941.80 = 558,194.80 : x
  2. Step 2: Convert to fraction form
    607,961.20/911,941.80 = 558,194.80/x
  3. Step 3: Cross multiply
    607,961.20x = 911,941.80 × 558,194.80
  4. Step 4: Simplify right side
    607,961.20x = 509,041,170,662.64
  5. Step 5: Solve for x
    x = 509,041,170,662.64/607,961.20
  6. Step 6: Final answer
    x = 837,292.20

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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.