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Finding the Fourth Proportional to 13,995.52, 20,994.86 and 4,636.76

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Solution

The fourth proportional to 13,995.52, 20,994.86 and 4,636.76 is: 6,955.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.52 : 20,994.86 = 4,636.76 : x
  2. Step 2: Convert to fraction form
    13,995.52/20,994.86 = 4,636.76/x
  3. Step 3: Cross multiply
    13,995.52x = 20,994.86 × 4,636.76
  4. Step 4: Simplify right side
    13,995.52x = 97,348,127.05
  5. Step 5: Solve for x
    x = 97,348,127.05/13,995.52
  6. Step 6: Final answer
    x = 6,955.66

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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.