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Finding the Fourth Proportional to 283,615.68, 391,384.60 and 154,555.28

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Solution

The fourth proportional to 283,615.68, 391,384.60 and 154,555.28 is: 213,283.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,615.68 : 391,384.60 = 154,555.28 : x
  2. Step 2: Convert to fraction form
    283,615.68/391,384.60 = 154,555.28/x
  3. Step 3: Cross multiply
    283,615.68x = 391,384.60 × 154,555.28
  4. Step 4: Simplify right side
    283,615.68x = 60,490,556,440.69
  5. Step 5: Solve for x
    x = 60,490,556,440.69/283,615.68
  6. Step 6: Final answer
    x = 213,283.54

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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.