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Finding the Fourth Proportional to 13,892.55, 20,845.65 and 6,495.93

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Solution

The fourth proportional to 13,892.55, 20,845.65 and 6,495.93 is: 9,747.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.55 : 20,845.65 = 6,495.93 : x
  2. Step 2: Convert to fraction form
    13,892.55/20,845.65 = 6,495.93/x
  3. Step 3: Cross multiply
    13,892.55x = 20,845.65 × 6,495.93
  4. Step 4: Simplify right side
    13,892.55x = 135,411,883.20
  5. Step 5: Solve for x
    x = 135,411,883.20/13,892.55
  6. Step 6: Final answer
    x = 9,747.09

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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.