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Finding the Fourth Proportional to 1,514.74, 2,091.57 and 956.14

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Solution

The fourth proportional to 1,514.74, 2,091.57 and 956.14 is: 1,320.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,514.74 : 2,091.57 = 956.14 : x
  2. Step 2: Convert to fraction form
    1,514.74/2,091.57 = 956.14/x
  3. Step 3: Cross multiply
    1,514.74x = 2,091.57 × 956.14
  4. Step 4: Simplify right side
    1,514.74x = 1,999,833.74
  5. Step 5: Solve for x
    x = 1,999,833.74/1,514.74
  6. Step 6: Final answer
    x = 1,320.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.