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Finding the Fourth Proportional to 1,158.51, 1,736.55 and 833.70

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Solution

The fourth proportional to 1,158.51, 1,736.55 and 833.70 is: 1,249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.51 : 1,736.55 = 833.70 : x
  2. Step 2: Convert to fraction form
    1,158.51/1,736.55 = 833.70/x
  3. Step 3: Cross multiply
    1,158.51x = 1,736.55 × 833.70
  4. Step 4: Simplify right side
    1,158.51x = 1,447,761.74
  5. Step 5: Solve for x
    x = 1,447,761.74/1,158.51
  6. Step 6: Final answer
    x = 1,249.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.