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Finding the Fourth Proportional to 1,036.24, 1,554.31 and 386.93

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Solution

The fourth proportional to 1,036.24, 1,554.31 and 386.93 is: 580.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.24 : 1,554.31 = 386.93 : x
  2. Step 2: Convert to fraction form
    1,036.24/1,554.31 = 386.93/x
  3. Step 3: Cross multiply
    1,036.24x = 1,554.31 × 386.93
  4. Step 4: Simplify right side
    1,036.24x = 601,400.43
  5. Step 5: Solve for x
    x = 601,400.43/1,036.24
  6. Step 6: Final answer
    x = 580.37

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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.