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Finding the Fourth Proportional to 19,107.75, 26,368.70 and 10,724.25

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Solution

The fourth proportional to 19,107.75, 26,368.70 and 10,724.25 is: 14,799.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.75 : 26,368.70 = 10,724.25 : x
  2. Step 2: Convert to fraction form
    19,107.75/26,368.70 = 10,724.25/x
  3. Step 3: Cross multiply
    19,107.75x = 26,368.70 × 10,724.25
  4. Step 4: Simplify right side
    19,107.75x = 282,784,477.35
  5. Step 5: Solve for x
    x = 282,784,477.35/19,107.75
  6. Step 6: Final answer
    x = 14,799.47

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Double scale
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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.