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Finding the Fourth Proportional to 56,980.44, 85,507.32 and 30,703.44

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Solution

The fourth proportional to 56,980.44, 85,507.32 and 30,703.44 is: 46,074.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,980.44 : 85,507.32 = 30,703.44 : x
  2. Step 2: Convert to fraction form
    56,980.44/85,507.32 = 30,703.44/x
  3. Step 3: Cross multiply
    56,980.44x = 85,507.32 × 30,703.44
  4. Step 4: Simplify right side
    56,980.44x = 2,625,368,869.18
  5. Step 5: Solve for x
    x = 2,625,368,869.18/56,980.44
  6. Step 6: Final answer
    x = 46,074.91

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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.