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Finding the Fourth Proportional to 439,015.92, 605,886.84 and 316,609.44

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Solution

The fourth proportional to 439,015.92, 605,886.84 and 316,609.44 is: 436,953.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,015.92 : 605,886.84 = 316,609.44 : x
  2. Step 2: Convert to fraction form
    439,015.92/605,886.84 = 316,609.44/x
  3. Step 3: Cross multiply
    439,015.92x = 605,886.84 × 316,609.44
  4. Step 4: Simplify right side
    439,015.92x = 191,829,493,115.77
  5. Step 5: Solve for x
    x = 191,829,493,115.77/439,015.92
  6. Step 6: Final answer
    x = 436,953.39

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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.