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Finding the Fourth Proportional to 437,790.40, 656,199.60 and 171,462.40

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Solution

The fourth proportional to 437,790.40, 656,199.60 and 171,462.40 is: 257,003.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,790.40 : 656,199.60 = 171,462.40 : x
  2. Step 2: Convert to fraction form
    437,790.40/656,199.60 = 171,462.40/x
  3. Step 3: Cross multiply
    437,790.40x = 656,199.60 × 171,462.40
  4. Step 4: Simplify right side
    437,790.40x = 112,513,558,295.04
  5. Step 5: Solve for x
    x = 112,513,558,295.04/437,790.40
  6. Step 6: Final answer
    x = 257,003.26

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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.