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Finding the Fourth Proportional to 18,980.19, 26,194.14 and 13,967.46

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Solution

The fourth proportional to 18,980.19, 26,194.14 and 13,967.46 is: 19,276.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.19 : 26,194.14 = 13,967.46 : x
  2. Step 2: Convert to fraction form
    18,980.19/26,194.14 = 13,967.46/x
  3. Step 3: Cross multiply
    18,980.19x = 26,194.14 × 13,967.46
  4. Step 4: Simplify right side
    18,980.19x = 365,865,602.68
  5. Step 5: Solve for x
    x = 365,865,602.68/18,980.19
  6. Step 6: Final answer
    x = 19,276.18

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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.