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Finding the Fourth Proportional to 7,893.18, 10,892.40 and 4,308.24

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Solution

The fourth proportional to 7,893.18, 10,892.40 and 4,308.24 is: 5,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.18 : 10,892.40 = 4,308.24 : x
  2. Step 2: Convert to fraction form
    7,893.18/10,892.40 = 4,308.24/x
  3. Step 3: Cross multiply
    7,893.18x = 10,892.40 × 4,308.24
  4. Step 4: Simplify right side
    7,893.18x = 46,927,073.38
  5. Step 5: Solve for x
    x = 46,927,073.38/7,893.18
  6. Step 6: Final answer
    x = 5,945.27

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Half scale
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Double scale
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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.