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Finding the Fourth Proportional to 402,366.20, 603,630.30 and 118,056.20

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Solution

The fourth proportional to 402,366.20, 603,630.30 and 118,056.20 is: 177,108.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,366.20 : 603,630.30 = 118,056.20 : x
  2. Step 2: Convert to fraction form
    402,366.20/603,630.30 = 118,056.20/x
  3. Step 3: Cross multiply
    402,366.20x = 603,630.30 × 118,056.20
  4. Step 4: Simplify right side
    402,366.20x = 71,262,299,422.86
  5. Step 5: Solve for x
    x = 71,262,299,422.86/402,366.20
  6. Step 6: Final answer
    x = 177,108.07

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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.