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Finding the Fourth Proportional to 1,091.10, 1,505.72 and 593.74

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Solution

The fourth proportional to 1,091.10, 1,505.72 and 593.74 is: 819.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.10 : 1,505.72 = 593.74 : x
  2. Step 2: Convert to fraction form
    1,091.10/1,505.72 = 593.74/x
  3. Step 3: Cross multiply
    1,091.10x = 1,505.72 × 593.74
  4. Step 4: Simplify right side
    1,091.10x = 894,006.22
  5. Step 5: Solve for x
    x = 894,006.22/1,091.10
  6. Step 6: Final answer
    x = 819.36

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Double scale
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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.