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Finding the Fourth Proportional to 17,105.72, 25,641 and 10,870.32

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Solution

The fourth proportional to 17,105.72, 25,641 and 10,870.32 is: 16,294.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,105.72 : 25,641 = 10,870.32 : x
  2. Step 2: Convert to fraction form
    17,105.72/25,641 = 10,870.32/x
  3. Step 3: Cross multiply
    17,105.72x = 25,641 × 10,870.32
  4. Step 4: Simplify right side
    17,105.72x = 278,725,875.12
  5. Step 5: Solve for x
    x = 278,725,875.12/17,105.72
  6. Step 6: Final answer
    x = 16,294.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.