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Finding the Fourth Proportional to 567,422.70, 783,030.69 and 312,773.28

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Solution

The fourth proportional to 567,422.70, 783,030.69 and 312,773.28 is: 431,620.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,422.70 : 783,030.69 = 312,773.28 : x
  2. Step 2: Convert to fraction form
    567,422.70/783,030.69 = 312,773.28/x
  3. Step 3: Cross multiply
    567,422.70x = 783,030.69 × 312,773.28
  4. Step 4: Simplify right side
    567,422.70x = 244,911,077,251.96
  5. Step 5: Solve for x
    x = 244,911,077,251.96/567,422.70
  6. Step 6: Final answer
    x = 431,620.16

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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.