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Finding the Fourth Proportional to 1,938.19, 2,907.05 and 622.09

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Solution

The fourth proportional to 1,938.19, 2,907.05 and 622.09 is: 933.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.19 : 2,907.05 = 622.09 : x
  2. Step 2: Convert to fraction form
    1,938.19/2,907.05 = 622.09/x
  3. Step 3: Cross multiply
    1,938.19x = 2,907.05 × 622.09
  4. Step 4: Simplify right side
    1,938.19x = 1,808,443.62
  5. Step 5: Solve for x
    x = 1,808,443.62/1,938.19
  6. Step 6: Final answer
    x = 933.06

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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.