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Finding the Fourth Proportional to 371,475.64, 557,214.18 and 90,993.88

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Solution

The fourth proportional to 371,475.64, 557,214.18 and 90,993.88 is: 136,491.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,475.64 : 557,214.18 = 90,993.88 : x
  2. Step 2: Convert to fraction form
    371,475.64/557,214.18 = 90,993.88/x
  3. Step 3: Cross multiply
    371,475.64x = 557,214.18 × 90,993.88
  4. Step 4: Simplify right side
    371,475.64x = 50,703,080,229.22
  5. Step 5: Solve for x
    x = 50,703,080,229.22/371,475.64
  6. Step 6: Final answer
    x = 136,491.00

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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.