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Finding the Fourth Proportional to 662,991.60, 994,487.40 and 558,015.60

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Solution

The fourth proportional to 662,991.60, 994,487.40 and 558,015.60 is: 837,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,991.60 : 994,487.40 = 558,015.60 : x
  2. Step 2: Convert to fraction form
    662,991.60/994,487.40 = 558,015.60/x
  3. Step 3: Cross multiply
    662,991.60x = 994,487.40 × 558,015.60
  4. Step 4: Simplify right side
    662,991.60x = 554,939,483,203.44
  5. Step 5: Solve for x
    x = 554,939,483,203.44/662,991.60
  6. Step 6: Final answer
    x = 837,023.40

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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.