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Finding the Fourth Proportional to 283,751.19, 391,579.37 and 156,431.34

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Solution

The fourth proportional to 283,751.19, 391,579.37 and 156,431.34 is: 215,876.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,751.19 : 391,579.37 = 156,431.34 : x
  2. Step 2: Convert to fraction form
    283,751.19/391,579.37 = 156,431.34/x
  3. Step 3: Cross multiply
    283,751.19x = 391,579.37 × 156,431.34
  4. Step 4: Simplify right side
    283,751.19x = 61,255,284,783.30
  5. Step 5: Solve for x
    x = 61,255,284,783.30/283,751.19
  6. Step 6: Final answer
    x = 215,876.75

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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.