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Finding the Fourth Proportional to 611,185.63, 843,489.54 and 356,618.83

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Solution

The fourth proportional to 611,185.63, 843,489.54 and 356,618.83 is: 492,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,185.63 : 843,489.54 = 356,618.83 : x
  2. Step 2: Convert to fraction form
    611,185.63/843,489.54 = 356,618.83/x
  3. Step 3: Cross multiply
    611,185.63x = 843,489.54 × 356,618.83
  4. Step 4: Simplify right side
    611,185.63x = 300,804,250,763.31
  5. Step 5: Solve for x
    x = 300,804,250,763.31/611,185.63
  6. Step 6: Final answer
    x = 492,165.13

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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.