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Finding the Fourth Proportional to 314,339.94, 471,505.28 and 77,682.62

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Solution

The fourth proportional to 314,339.94, 471,505.28 and 77,682.62 is: 116,522.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,339.94 : 471,505.28 = 77,682.62 : x
  2. Step 2: Convert to fraction form
    314,339.94/471,505.28 = 77,682.62/x
  3. Step 3: Cross multiply
    314,339.94x = 471,505.28 × 77,682.62
  4. Step 4: Simplify right side
    314,339.94x = 36,627,765,494.23
  5. Step 5: Solve for x
    x = 36,627,765,494.23/314,339.94
  6. Step 6: Final answer
    x = 116,522.79

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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.