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Finding the Fourth Proportional to 418,168.01, 627,290.90 and 118,655.93

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Solution

The fourth proportional to 418,168.01, 627,290.90 and 118,655.93 is: 177,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,168.01 : 627,290.90 = 118,655.93 : x
  2. Step 2: Convert to fraction form
    418,168.01/627,290.90 = 118,655.93/x
  3. Step 3: Cross multiply
    418,168.01x = 627,290.90 × 118,655.93
  4. Step 4: Simplify right side
    418,168.01x = 74,431,785,120.04
  5. Step 5: Solve for x
    x = 74,431,785,120.04/418,168.01
  6. Step 6: Final answer
    x = 177,994.93

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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.