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Finding the Fourth Proportional to 14,572.21, 21,868.94 and 5,809.63

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Solution

The fourth proportional to 14,572.21, 21,868.94 and 5,809.63 is: 8,718.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,572.21 : 21,868.94 = 5,809.63 : x
  2. Step 2: Convert to fraction form
    14,572.21/21,868.94 = 5,809.63/x
  3. Step 3: Cross multiply
    14,572.21x = 21,868.94 × 5,809.63
  4. Step 4: Simplify right side
    14,572.21x = 127,050,409.74
  5. Step 5: Solve for x
    x = 127,050,409.74/14,572.21
  6. Step 6: Final answer
    x = 8,718.68

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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.