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Finding the Fourth Proportional to 399,579.38, 598,411.58 and 291,218.32

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Solution

The fourth proportional to 399,579.38, 598,411.58 and 291,218.32 is: 436,129.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,579.38 : 598,411.58 = 291,218.32 : x
  2. Step 2: Convert to fraction form
    399,579.38/598,411.58 = 291,218.32/x
  3. Step 3: Cross multiply
    399,579.38x = 598,411.58 × 291,218.32
  4. Step 4: Simplify right side
    399,579.38x = 174,268,414,996.15
  5. Step 5: Solve for x
    x = 174,268,414,996.15/399,579.38
  6. Step 6: Final answer
    x = 436,129.65

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1.5x scale

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.