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Finding the Fourth Proportional to 14,045.64, 19,383.44 and 7,758.12

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Solution

The fourth proportional to 14,045.64, 19,383.44 and 7,758.12 is: 10,706.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,045.64 : 19,383.44 = 7,758.12 : x
  2. Step 2: Convert to fraction form
    14,045.64/19,383.44 = 7,758.12/x
  3. Step 3: Cross multiply
    14,045.64x = 19,383.44 × 7,758.12
  4. Step 4: Simplify right side
    14,045.64x = 150,379,053.53
  5. Step 5: Solve for x
    x = 150,379,053.53/14,045.64
  6. Step 6: Final answer
    x = 10,706.46

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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.