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Finding the Fourth Proportional to 620,430.36, 856,061.09 and 362,190.11

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Solution

The fourth proportional to 620,430.36, 856,061.09 and 362,190.11 is: 499,744.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,430.36 : 856,061.09 = 362,190.11 : x
  2. Step 2: Convert to fraction form
    620,430.36/856,061.09 = 362,190.11/x
  3. Step 3: Cross multiply
    620,430.36x = 856,061.09 × 362,190.11
  4. Step 4: Simplify right side
    620,430.36x = 310,056,854,262.56
  5. Step 5: Solve for x
    x = 310,056,854,262.56/620,430.36
  6. Step 6: Final answer
    x = 499,744.81

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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.