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Finding the Fourth Proportional to 398,591.92, 597,890.04 and 118,111.60

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Solution

The fourth proportional to 398,591.92, 597,890.04 and 118,111.60 is: 177,168.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,591.92 : 597,890.04 = 118,111.60 : x
  2. Step 2: Convert to fraction form
    398,591.92/597,890.04 = 118,111.60/x
  3. Step 3: Cross multiply
    398,591.92x = 597,890.04 × 118,111.60
  4. Step 4: Simplify right side
    398,591.92x = 70,617,749,248.46
  5. Step 5: Solve for x
    x = 70,617,749,248.46/398,591.92
  6. Step 6: Final answer
    x = 177,168.04

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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.