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Finding the Fourth Proportional to 25,813.63, 38,720.44 and 7,345.63

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Solution

The fourth proportional to 25,813.63, 38,720.44 and 7,345.63 is: 11,018.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,813.63 : 38,720.44 = 7,345.63 : x
  2. Step 2: Convert to fraction form
    25,813.63/38,720.44 = 7,345.63/x
  3. Step 3: Cross multiply
    25,813.63x = 38,720.44 × 7,345.63
  4. Step 4: Simplify right side
    25,813.63x = 284,426,025.68
  5. Step 5: Solve for x
    x = 284,426,025.68/25,813.63
  6. Step 6: Final answer
    x = 11,018.44

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Double scale
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Similar ratio
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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.