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Finding the Fourth Proportional to 1,359.82, 2,038.91 and 742.67

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Solution

The fourth proportional to 1,359.82, 2,038.91 and 742.67 is: 1,113.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.82 : 2,038.91 = 742.67 : x
  2. Step 2: Convert to fraction form
    1,359.82/2,038.91 = 742.67/x
  3. Step 3: Cross multiply
    1,359.82x = 2,038.91 × 742.67
  4. Step 4: Simplify right side
    1,359.82x = 1,514,227.10
  5. Step 5: Solve for x
    x = 1,514,227.10/1,359.82
  6. Step 6: Final answer
    x = 1,113.55

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