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Finding the Fourth Proportional to 34,215.74, 47,215 and 19,107.51

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Solution

The fourth proportional to 34,215.74, 47,215 and 19,107.51 is: 26,366.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,215.74 : 47,215 = 19,107.51 : x
  2. Step 2: Convert to fraction form
    34,215.74/47,215 = 19,107.51/x
  3. Step 3: Cross multiply
    34,215.74x = 47,215 × 19,107.51
  4. Step 4: Simplify right side
    34,215.74x = 902,161,084.65
  5. Step 5: Solve for x
    x = 902,161,084.65/34,215.74
  6. Step 6: Final answer
    x = 26,366.84

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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.