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Finding the Fourth Proportional to 16,393.71, 22,622.64 and 9,681.49

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Solution

The fourth proportional to 16,393.71, 22,622.64 and 9,681.49 is: 13,360.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,393.71 : 22,622.64 = 9,681.49 : x
  2. Step 2: Convert to fraction form
    16,393.71/22,622.64 = 9,681.49/x
  3. Step 3: Cross multiply
    16,393.71x = 22,622.64 × 9,681.49
  4. Step 4: Simplify right side
    16,393.71x = 219,020,862.93
  5. Step 5: Solve for x
    x = 219,020,862.93/16,393.71
  6. Step 6: Final answer
    x = 13,360.06

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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.