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Finding the Fourth Proportional to 19,435.75, 26,821.03 and 10,937.20

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Solution

The fourth proportional to 19,435.75, 26,821.03 and 10,937.20 is: 15,093.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,435.75 : 26,821.03 = 10,937.20 : x
  2. Step 2: Convert to fraction form
    19,435.75/26,821.03 = 10,937.20/x
  3. Step 3: Cross multiply
    19,435.75x = 26,821.03 × 10,937.20
  4. Step 4: Simplify right side
    19,435.75x = 293,346,969.32
  5. Step 5: Solve for x
    x = 293,346,969.32/19,435.75
  6. Step 6: Final answer
    x = 15,093.16

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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.