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Finding the Fourth Proportional to 13,994.53, 19,312.27 and 7,621.06

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Solution

The fourth proportional to 13,994.53, 19,312.27 and 7,621.06 is: 10,516.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.53 : 19,312.27 = 7,621.06 : x
  2. Step 2: Convert to fraction form
    13,994.53/19,312.27 = 7,621.06/x
  3. Step 3: Cross multiply
    13,994.53x = 19,312.27 × 7,621.06
  4. Step 4: Simplify right side
    13,994.53x = 147,179,968.41
  5. Step 5: Solve for x
    x = 147,179,968.41/13,994.53
  6. Step 6: Final answer
    x = 10,516.96

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Half scale
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Double scale
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Similar ratio
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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.