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Finding the Fourth Proportional to 7,357.92, 10,155.84 and 4,215.84

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Solution

The fourth proportional to 7,357.92, 10,155.84 and 4,215.84 is: 5,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,357.92 : 10,155.84 = 4,215.84 : x
  2. Step 2: Convert to fraction form
    7,357.92/10,155.84 = 4,215.84/x
  3. Step 3: Cross multiply
    7,357.92x = 10,155.84 × 4,215.84
  4. Step 4: Simplify right side
    7,357.92x = 42,815,396.51
  5. Step 5: Solve for x
    x = 42,815,396.51/7,357.92
  6. Step 6: Final answer
    x = 5,818.95

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