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Finding the Fourth Proportional to 2,537.64, 3,807.18 and 999.72

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Solution

The fourth proportional to 2,537.64, 3,807.18 and 999.72 is: 1,499.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,537.64 : 3,807.18 = 999.72 : x
  2. Step 2: Convert to fraction form
    2,537.64/3,807.18 = 999.72/x
  3. Step 3: Cross multiply
    2,537.64x = 3,807.18 × 999.72
  4. Step 4: Simplify right side
    2,537.64x = 3,806,113.99
  5. Step 5: Solve for x
    x = 3,806,113.99/2,537.64
  6. Step 6: Final answer
    x = 1,499.86

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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.