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Finding the Fourth Proportional to 12,355.92, 17,052.60 and 7,051.50

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Solution

The fourth proportional to 12,355.92, 17,052.60 and 7,051.50 is: 9,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.92 : 17,052.60 = 7,051.50 : x
  2. Step 2: Convert to fraction form
    12,355.92/17,052.60 = 7,051.50/x
  3. Step 3: Cross multiply
    12,355.92x = 17,052.60 × 7,051.50
  4. Step 4: Simplify right side
    12,355.92x = 120,246,408.90
  5. Step 5: Solve for x
    x = 120,246,408.90/12,355.92
  6. Step 6: Final answer
    x = 9,731.89

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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.