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Finding the Fourth Proportional to 13,657.92, 20,473.92 and 4,888.32

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Solution

The fourth proportional to 13,657.92, 20,473.92 and 4,888.32 is: 7,327.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.92 : 20,473.92 = 4,888.32 : x
  2. Step 2: Convert to fraction form
    13,657.92/20,473.92 = 4,888.32/x
  3. Step 3: Cross multiply
    13,657.92x = 20,473.92 × 4,888.32
  4. Step 4: Simplify right side
    13,657.92x = 100,083,072.61
  5. Step 5: Solve for x
    x = 100,083,072.61/13,657.92
  6. Step 6: Final answer
    x = 7,327.84

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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.