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Finding the Fourth Proportional to 18,994.93, 26,218.08 and 10,929.49

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Solution

The fourth proportional to 18,994.93, 26,218.08 and 10,929.49 is: 15,085.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.93 : 26,218.08 = 10,929.49 : x
  2. Step 2: Convert to fraction form
    18,994.93/26,218.08 = 10,929.49/x
  3. Step 3: Cross multiply
    18,994.93x = 26,218.08 × 10,929.49
  4. Step 4: Simplify right side
    18,994.93x = 286,550,177.63
  5. Step 5: Solve for x
    x = 286,550,177.63/18,994.93
  6. Step 6: Final answer
    x = 15,085.62

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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.