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Finding the Fourth Proportional to 418,565.81, 627,834.63 and 181,908.51

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Solution

The fourth proportional to 418,565.81, 627,834.63 and 181,908.51 is: 272,856.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,565.81 : 627,834.63 = 181,908.51 : x
  2. Step 2: Convert to fraction form
    418,565.81/627,834.63 = 181,908.51/x
  3. Step 3: Cross multiply
    418,565.81x = 627,834.63 × 181,908.51
  4. Step 4: Simplify right side
    418,565.81x = 114,208,462,069.70
  5. Step 5: Solve for x
    x = 114,208,462,069.70/418,565.81
  6. Step 6: Final answer
    x = 272,856.65

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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.