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Finding the Third Proportional to 946.88 and 1,389.75

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Solution

The third proportional to 946.88 and 1,389.75 is: 2,039.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.88 : 1,389.75 = 1,389.75 : x
  2. Step 2: Convert to fraction form
    946.88/1,389.75 = 1,389.75/x
  3. Step 3: Cross multiply
    946.88x = 1,389.75 × 1,389.75
  4. Step 4: Simplify right side
    946.88x = 1,931,405.06
  5. Step 5: Solve for x
    x = 1,931,405.06/946.88
  6. Step 6: Final answer
    x = 2,039.77

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.