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Finding the Fourth Proportional to 671,115.26, 926,178.92 and 384,653.86

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Solution

The fourth proportional to 671,115.26, 926,178.92 and 384,653.86 is: 530,845.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,115.26 : 926,178.92 = 384,653.86 : x
  2. Step 2: Convert to fraction form
    671,115.26/926,178.92 = 384,653.86/x
  3. Step 3: Cross multiply
    671,115.26x = 926,178.92 × 384,653.86
  4. Step 4: Simplify right side
    671,115.26x = 356,258,296,628.63
  5. Step 5: Solve for x
    x = 356,258,296,628.63/671,115.26
  6. Step 6: Final answer
    x = 530,845.17

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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.