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Finding the Fourth Proportional to 621,207.56, 931,657.44 and 266,181.32

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Solution

The fourth proportional to 621,207.56, 931,657.44 and 266,181.32 is: 399,206.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,207.56 : 931,657.44 = 266,181.32 : x
  2. Step 2: Convert to fraction form
    621,207.56/931,657.44 = 266,181.32/x
  3. Step 3: Cross multiply
    621,207.56x = 931,657.44 × 266,181.32
  4. Step 4: Simplify right side
    621,207.56x = 247,989,807,167.02
  5. Step 5: Solve for x
    x = 247,989,807,167.02/621,207.56
  6. Step 6: Final answer
    x = 399,206.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.