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Finding the Fourth Proportional to 1,936.23, 2,905.35 and 841.51

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Solution

The fourth proportional to 1,936.23, 2,905.35 and 841.51 is: 1,262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.23 : 2,905.35 = 841.51 : x
  2. Step 2: Convert to fraction form
    1,936.23/2,905.35 = 841.51/x
  3. Step 3: Cross multiply
    1,936.23x = 2,905.35 × 841.51
  4. Step 4: Simplify right side
    1,936.23x = 2,444,881.08
  5. Step 5: Solve for x
    x = 2,444,881.08/1,936.23
  6. Step 6: Final answer
    x = 1,262.70

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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.