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Finding the Third Proportional to 929.50 and 1,570

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Solution

The third proportional to 929.50 and 1,570 is: 2,651.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.50 : 1,570 = 1,570 : x
  2. Step 2: Convert to fraction form
    929.50/1,570 = 1,570/x
  3. Step 3: Cross multiply
    929.50x = 1,570 × 1,570
  4. Step 4: Simplify right side
    929.50x = 2,464,900
  5. Step 5: Solve for x
    x = 2,464,900/929.50
  6. Step 6: Final answer
    x = 2,651.86

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.