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Finding the Fourth Proportional to 19,417, 26,794.36 and 11,457.40

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Solution

The fourth proportional to 19,417, 26,794.36 and 11,457.40 is: 15,810.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,417 : 26,794.36 = 11,457.40 : x
  2. Step 2: Convert to fraction form
    19,417/26,794.36 = 11,457.40/x
  3. Step 3: Cross multiply
    19,417x = 26,794.36 × 11,457.40
  4. Step 4: Simplify right side
    19,417x = 306,993,700.26
  5. Step 5: Solve for x
    x = 306,993,700.26/19,417
  6. Step 6: Final answer
    x = 15,810.56

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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.