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Finding the Fourth Proportional to 398,612.68, 597,817.14 and 118,064.32

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Solution

The fourth proportional to 398,612.68, 597,817.14 and 118,064.32 is: 177,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,612.68 : 597,817.14 = 118,064.32 : x
  2. Step 2: Convert to fraction form
    398,612.68/597,817.14 = 118,064.32/x
  3. Step 3: Cross multiply
    398,612.68x = 597,817.14 × 118,064.32
  4. Step 4: Simplify right side
    398,612.68x = 70,580,874,118.44
  5. Step 5: Solve for x
    x = 70,580,874,118.44/398,612.68
  6. Step 6: Final answer
    x = 177,066.30

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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.