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Finding the Fourth Proportional to 18,851.90, 26,018.16 and 10,894.46

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Solution

The fourth proportional to 18,851.90, 26,018.16 and 10,894.46 is: 15,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.90 : 26,018.16 = 10,894.46 : x
  2. Step 2: Convert to fraction form
    18,851.90/26,018.16 = 10,894.46/x
  3. Step 3: Cross multiply
    18,851.90x = 26,018.16 × 10,894.46
  4. Step 4: Simplify right side
    18,851.90x = 283,453,803.39
  5. Step 5: Solve for x
    x = 283,453,803.39/18,851.90
  6. Step 6: Final answer
    x = 15,035.82

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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.