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Finding the Fourth Proportional to 398,612.43, 597,816.77 and 118,064.07

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Solution

The fourth proportional to 398,612.43, 597,816.77 and 118,064.07 is: 177,065.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,612.43 : 597,816.77 = 118,064.07 : x
  2. Step 2: Convert to fraction form
    398,612.43/597,816.77 = 118,064.07/x
  3. Step 3: Cross multiply
    398,612.43x = 597,816.77 × 118,064.07
  4. Step 4: Simplify right side
    398,612.43x = 70,580,680,390.13
  5. Step 5: Solve for x
    x = 70,580,680,390.13/398,612.43
  6. Step 6: Final answer
    x = 177,065.93

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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.