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Finding the Fourth Proportional to 28,893.60, 43,340.16 and 7,833.60

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Solution

The fourth proportional to 28,893.60, 43,340.16 and 7,833.60 is: 11,750.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893.60 : 43,340.16 = 7,833.60 : x
  2. Step 2: Convert to fraction form
    28,893.60/43,340.16 = 7,833.60/x
  3. Step 3: Cross multiply
    28,893.60x = 43,340.16 × 7,833.60
  4. Step 4: Simplify right side
    28,893.60x = 339,509,477.38
  5. Step 5: Solve for x
    x = 339,509,477.38/28,893.60
  6. Step 6: Final answer
    x = 11,750.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.