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Finding the Fourth Proportional to 16,693.80, 23,039.88 and 9,618.84

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Solution

The fourth proportional to 16,693.80, 23,039.88 and 9,618.84 is: 13,275.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,693.80 : 23,039.88 = 9,618.84 : x
  2. Step 2: Convert to fraction form
    16,693.80/23,039.88 = 9,618.84/x
  3. Step 3: Cross multiply
    16,693.80x = 23,039.88 × 9,618.84
  4. Step 4: Simplify right side
    16,693.80x = 221,616,919.34
  5. Step 5: Solve for x
    x = 221,616,919.34/16,693.80
  6. Step 6: Final answer
    x = 13,275.40

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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.