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Finding the Fourth Proportional to 283,628.79, 391,407.80 and 154,567.30

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Solution

The fourth proportional to 283,628.79, 391,407.80 and 154,567.30 is: 213,302.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,628.79 : 391,407.80 = 154,567.30 : x
  2. Step 2: Convert to fraction form
    283,628.79/391,407.80 = 154,567.30/x
  3. Step 3: Cross multiply
    283,628.79x = 391,407.80 × 154,567.30
  4. Step 4: Simplify right side
    283,628.79x = 60,498,846,262.19
  5. Step 5: Solve for x
    x = 60,498,846,262.19/283,628.79
  6. Step 6: Final answer
    x = 213,302.91

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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.