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Finding the Fourth Proportional to 683,279.89, 942,706.96 and 381,415.57

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Solution

The fourth proportional to 683,279.89, 942,706.96 and 381,415.57 is: 526,231.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,279.89 : 942,706.96 = 381,415.57 : x
  2. Step 2: Convert to fraction form
    683,279.89/942,706.96 = 381,415.57/x
  3. Step 3: Cross multiply
    683,279.89x = 942,706.96 × 381,415.57
  4. Step 4: Simplify right side
    683,279.89x = 359,563,112,491.37
  5. Step 5: Solve for x
    x = 359,563,112,491.37/683,279.89
  6. Step 6: Final answer
    x = 526,231.08

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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.