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Finding the Fourth Proportional to 77,394.87, 106,791.69 and 43,397.94

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Solution

The fourth proportional to 77,394.87, 106,791.69 and 43,397.94 is: 59,881.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,394.87 : 106,791.69 = 43,397.94 : x
  2. Step 2: Convert to fraction form
    77,394.87/106,791.69 = 43,397.94/x
  3. Step 3: Cross multiply
    77,394.87x = 106,791.69 × 43,397.94
  4. Step 4: Simplify right side
    77,394.87x = 4,634,539,355.12
  5. Step 5: Solve for x
    x = 4,634,539,355.12/77,394.87
  6. Step 6: Final answer
    x = 59,881.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.