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Finding the Fourth Proportional to 14,313.92, 19,712.28 and 14,008.64

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Solution

The fourth proportional to 14,313.92, 19,712.28 and 14,008.64 is: 19,291.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,313.92 : 19,712.28 = 14,008.64 : x
  2. Step 2: Convert to fraction form
    14,313.92/19,712.28 = 14,008.64/x
  3. Step 3: Cross multiply
    14,313.92x = 19,712.28 × 14,008.64
  4. Step 4: Simplify right side
    14,313.92x = 276,142,234.10
  5. Step 5: Solve for x
    x = 276,142,234.10/14,313.92
  6. Step 6: Final answer
    x = 19,291.87

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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.