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Finding the Fourth Proportional to 621,010.29, 856,998.93 and 345,372.01

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Solution

The fourth proportional to 621,010.29, 856,998.93 and 345,372.01 is: 476,616.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,010.29 : 856,998.93 = 345,372.01 : x
  2. Step 2: Convert to fraction form
    621,010.29/856,998.93 = 345,372.01/x
  3. Step 3: Cross multiply
    621,010.29x = 856,998.93 × 345,372.01
  4. Step 4: Simplify right side
    621,010.29x = 295,983,441,684.38
  5. Step 5: Solve for x
    x = 295,983,441,684.38/621,010.29
  6. Step 6: Final answer
    x = 476,616.00

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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.