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Finding the Fourth Proportional to 13,970.77, 20,955.61 and 4,736.77

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Solution

The fourth proportional to 13,970.77, 20,955.61 and 4,736.77 is: 7,104.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.77 : 20,955.61 = 4,736.77 : x
  2. Step 2: Convert to fraction form
    13,970.77/20,955.61 = 4,736.77/x
  3. Step 3: Cross multiply
    13,970.77x = 20,955.61 × 4,736.77
  4. Step 4: Simplify right side
    13,970.77x = 99,261,904.78
  5. Step 5: Solve for x
    x = 99,261,904.78/13,970.77
  6. Step 6: Final answer
    x = 7,104.97

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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.