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Finding the Fourth Proportional to 1,502.74, 2,074.10 and 913.13

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Solution

The fourth proportional to 1,502.74, 2,074.10 and 913.13 is: 1,260.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.74 : 2,074.10 = 913.13 : x
  2. Step 2: Convert to fraction form
    1,502.74/2,074.10 = 913.13/x
  3. Step 3: Cross multiply
    1,502.74x = 2,074.10 × 913.13
  4. Step 4: Simplify right side
    1,502.74x = 1,893,922.93
  5. Step 5: Solve for x
    x = 1,893,922.93/1,502.74
  6. Step 6: Final answer
    x = 1,260.31

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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.