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Finding the Fourth Proportional to 14,047.45, 21,064.86 and 5,276.16

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Solution

The fourth proportional to 14,047.45, 21,064.86 and 5,276.16 is: 7,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,047.45 : 21,064.86 = 5,276.16 : x
  2. Step 2: Convert to fraction form
    14,047.45/21,064.86 = 5,276.16/x
  3. Step 3: Cross multiply
    14,047.45x = 21,064.86 × 5,276.16
  4. Step 4: Simplify right side
    14,047.45x = 111,141,571.74
  5. Step 5: Solve for x
    x = 111,141,571.74/14,047.45
  6. Step 6: Final answer
    x = 7,911.87

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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.