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Finding the Fourth Proportional to 758.10, 1,047.24 and 585.66

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Solution

The fourth proportional to 758.10, 1,047.24 and 585.66 is: 809.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.10 : 1,047.24 = 585.66 : x
  2. Step 2: Convert to fraction form
    758.10/1,047.24 = 585.66/x
  3. Step 3: Cross multiply
    758.10x = 1,047.24 × 585.66
  4. Step 4: Simplify right side
    758.10x = 613,326.58
  5. Step 5: Solve for x
    x = 613,326.58/758.10
  6. Step 6: Final answer
    x = 809.03

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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.