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Finding the Fourth Proportional to 418,435.92, 627,271.16 and 181,693.17

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Solution

The fourth proportional to 418,435.92, 627,271.16 and 181,693.17 is: 272,373.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,435.92 : 627,271.16 = 181,693.17 : x
  2. Step 2: Convert to fraction form
    418,435.92/627,271.16 = 181,693.17/x
  3. Step 3: Cross multiply
    418,435.92x = 627,271.16 × 181,693.17
  4. Step 4: Simplify right side
    418,435.92x = 113,970,884,601.51
  5. Step 5: Solve for x
    x = 113,970,884,601.51/418,435.92
  6. Step 6: Final answer
    x = 272,373.57

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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.