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Finding the Fourth Proportional to 7,893.15, 10,877.57 and 5,651.13

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Solution

The fourth proportional to 7,893.15, 10,877.57 and 5,651.13 is: 7,787.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.15 : 10,877.57 = 5,651.13 : x
  2. Step 2: Convert to fraction form
    7,893.15/10,877.57 = 5,651.13/x
  3. Step 3: Cross multiply
    7,893.15x = 10,877.57 × 5,651.13
  4. Step 4: Simplify right side
    7,893.15x = 61,470,533.90
  5. Step 5: Solve for x
    x = 61,470,533.90/7,893.15
  6. Step 6: Final answer
    x = 7,787.83

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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.