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Finding the Fourth Proportional to 5,787.53, 7,990.35 and 4,458.68

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Solution

The fourth proportional to 5,787.53, 7,990.35 and 4,458.68 is: 6,155.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.53 : 7,990.35 = 4,458.68 : x
  2. Step 2: Convert to fraction form
    5,787.53/7,990.35 = 4,458.68/x
  3. Step 3: Cross multiply
    5,787.53x = 7,990.35 × 4,458.68
  4. Step 4: Simplify right side
    5,787.53x = 35,626,413.74
  5. Step 5: Solve for x
    x = 35,626,413.74/5,787.53
  6. Step 6: Final answer
    x = 6,155.72

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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.