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Finding the Fourth Proportional to 351,818.84, 485,511.70 and 190,673.85

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Solution

The fourth proportional to 351,818.84, 485,511.70 and 190,673.85 is: 263,130.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,818.84 : 485,511.70 = 190,673.85 : x
  2. Step 2: Convert to fraction form
    351,818.84/485,511.70 = 190,673.85/x
  3. Step 3: Cross multiply
    351,818.84x = 485,511.70 × 190,673.85
  4. Step 4: Simplify right side
    351,818.84x = 92,574,382,631.49
  5. Step 5: Solve for x
    x = 92,574,382,631.49/351,818.84
  6. Step 6: Final answer
    x = 263,130.83

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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.