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Finding the Fourth Proportional to 77,836.76, 107,394.90 and 47,611.04

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Solution

The fourth proportional to 77,836.76, 107,394.90 and 47,611.04 is: 65,691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,836.76 : 107,394.90 = 47,611.04 : x
  2. Step 2: Convert to fraction form
    77,836.76/107,394.90 = 47,611.04/x
  3. Step 3: Cross multiply
    77,836.76x = 107,394.90 × 47,611.04
  4. Step 4: Simplify right side
    77,836.76x = 5,113,182,879.70
  5. Step 5: Solve for x
    x = 5,113,182,879.70/77,836.76
  6. Step 6: Final answer
    x = 65,691.11

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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.