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Finding the Fourth Proportional to 448,859.58, 619,181.16 and 287,532.79

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Solution

The fourth proportional to 448,859.58, 619,181.16 and 287,532.79 is: 396,638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,859.58 : 619,181.16 = 287,532.79 : x
  2. Step 2: Convert to fraction form
    448,859.58/619,181.16 = 287,532.79/x
  3. Step 3: Cross multiply
    448,859.58x = 619,181.16 × 287,532.79
  4. Step 4: Simplify right side
    448,859.58x = 178,034,885,441.41
  5. Step 5: Solve for x
    x = 178,034,885,441.41/448,859.58
  6. Step 6: Final answer
    x = 396,638.27

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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.