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Finding the Fourth Proportional to 283,615.94, 391,384.96 and 154,555.54

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Solution

The fourth proportional to 283,615.94, 391,384.96 and 154,555.54 is: 213,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,615.94 : 391,384.96 = 154,555.54 : x
  2. Step 2: Convert to fraction form
    283,615.94/391,384.96 = 154,555.54/x
  3. Step 3: Cross multiply
    283,615.94x = 391,384.96 × 154,555.54
  4. Step 4: Simplify right side
    283,615.94x = 60,490,713,840.68
  5. Step 5: Solve for x
    x = 60,490,713,840.68/283,615.94
  6. Step 6: Final answer
    x = 213,283.90

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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.