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Finding the Fourth Proportional to 14,797.84, 20,421.64 and 8,510.22

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Solution

The fourth proportional to 14,797.84, 20,421.64 and 8,510.22 is: 11,744.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,797.84 : 20,421.64 = 8,510.22 : x
  2. Step 2: Convert to fraction form
    14,797.84/20,421.64 = 8,510.22/x
  3. Step 3: Cross multiply
    14,797.84x = 20,421.64 × 8,510.22
  4. Step 4: Simplify right side
    14,797.84x = 173,792,649.16
  5. Step 5: Solve for x
    x = 173,792,649.16/14,797.84
  6. Step 6: Final answer
    x = 11,744.46

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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.