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Finding the Fourth Proportional to 18,994.60, 26,206.72 and 11,035.32

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Solution

The fourth proportional to 18,994.60, 26,206.72 and 11,035.32 is: 15,225.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.60 : 26,206.72 = 11,035.32 : x
  2. Step 2: Convert to fraction form
    18,994.60/26,206.72 = 11,035.32/x
  3. Step 3: Cross multiply
    18,994.60x = 26,206.72 × 11,035.32
  4. Step 4: Simplify right side
    18,994.60x = 289,199,541.35
  5. Step 5: Solve for x
    x = 289,199,541.35/18,994.60
  6. Step 6: Final answer
    x = 15,225.36

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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.