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Finding the Fourth Proportional to 620,705.79, 856,546.65 and 362,606.65

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Solution

The fourth proportional to 620,705.79, 856,546.65 and 362,606.65 is: 500,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,705.79 : 856,546.65 = 362,606.65 : x
  2. Step 2: Convert to fraction form
    620,705.79/856,546.65 = 362,606.65/x
  3. Step 3: Cross multiply
    620,705.79x = 856,546.65 × 362,606.65
  4. Step 4: Simplify right side
    620,705.79x = 310,589,509,183.86
  5. Step 5: Solve for x
    x = 310,589,509,183.86/620,705.79
  6. Step 6: Final answer
    x = 500,381.20

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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.