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Finding the Fourth Proportional to 567,626.59, 783,284.61 and 312,972.31

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Solution

The fourth proportional to 567,626.59, 783,284.61 and 312,972.31 is: 431,879.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,626.59 : 783,284.61 = 312,972.31 : x
  2. Step 2: Convert to fraction form
    567,626.59/783,284.61 = 312,972.31/x
  3. Step 3: Cross multiply
    567,626.59x = 783,284.61 × 312,972.31
  4. Step 4: Simplify right side
    567,626.59x = 245,146,393,779.15
  5. Step 5: Solve for x
    x = 245,146,393,779.15/567,626.59
  6. Step 6: Final answer
    x = 431,879.69

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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.