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Finding the Fourth Proportional to 14,021.64, 19,349.28 and 7,648.12

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Solution

The fourth proportional to 14,021.64, 19,349.28 and 7,648.12 is: 10,554.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,021.64 : 19,349.28 = 7,648.12 : x
  2. Step 2: Convert to fraction form
    14,021.64/19,349.28 = 7,648.12/x
  3. Step 3: Cross multiply
    14,021.64x = 19,349.28 × 7,648.12
  4. Step 4: Simplify right side
    14,021.64x = 147,985,615.35
  5. Step 5: Solve for x
    x = 147,985,615.35/14,021.64
  6. Step 6: Final answer
    x = 10,554.09

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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.