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Finding the Fourth Proportional to 18,894.70, 26,074.70 and 10,511.20

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Solution

The fourth proportional to 18,894.70, 26,074.70 and 10,511.20 is: 14,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.70 : 26,074.70 = 10,511.20 : x
  2. Step 2: Convert to fraction form
    18,894.70/26,074.70 = 10,511.20/x
  3. Step 3: Cross multiply
    18,894.70x = 26,074.70 × 10,511.20
  4. Step 4: Simplify right side
    18,894.70x = 274,076,386.64
  5. Step 5: Solve for x
    x = 274,076,386.64/18,894.70
  6. Step 6: Final answer
    x = 14,505.46

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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.