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Finding the Fourth Proportional to 671,338.64, 926,338.92 and 384,806

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Solution

The fourth proportional to 671,338.64, 926,338.92 and 384,806 is: 530,970.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,338.64 : 926,338.92 = 384,806 : x
  2. Step 2: Convert to fraction form
    671,338.64/926,338.92 = 384,806/x
  3. Step 3: Cross multiply
    671,338.64x = 926,338.92 × 384,806
  4. Step 4: Simplify right side
    671,338.64x = 356,460,774,449.52
  5. Step 5: Solve for x
    x = 356,460,774,449.52/671,338.64
  6. Step 6: Final answer
    x = 530,970.14

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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.