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Finding the Third Proportional to 957.50 and 1,159

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Solution

The third proportional to 957.50 and 1,159 is: 1,402.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.50 : 1,159 = 1,159 : x
  2. Step 2: Convert to fraction form
    957.50/1,159 = 1,159/x
  3. Step 3: Cross multiply
    957.50x = 1,159 × 1,159
  4. Step 4: Simplify right side
    957.50x = 1,343,281
  5. Step 5: Solve for x
    x = 1,343,281/957.50
  6. Step 6: Final answer
    x = 1,402.90

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.