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Finding the Fourth Proportional to 700,317.90, 966,425.99 and 394,393.05

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Solution

The fourth proportional to 700,317.90, 966,425.99 and 394,393.05 is: 544,255.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,317.90 : 966,425.99 = 394,393.05 : x
  2. Step 2: Convert to fraction form
    700,317.90/966,425.99 = 394,393.05/x
  3. Step 3: Cross multiply
    700,317.90x = 966,425.99 × 394,393.05
  4. Step 4: Simplify right side
    700,317.90x = 381,151,691,823.40
  5. Step 5: Solve for x
    x = 381,151,691,823.40/700,317.90
  6. Step 6: Final answer
    x = 544,255.25

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1.5x scale

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.