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Finding the Fourth Proportional to 74,697.16, 112,045.43 and 30,323.54

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Solution

The fourth proportional to 74,697.16, 112,045.43 and 30,323.54 is: 45,485.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,697.16 : 112,045.43 = 30,323.54 : x
  2. Step 2: Convert to fraction form
    74,697.16/112,045.43 = 30,323.54/x
  3. Step 3: Cross multiply
    74,697.16x = 112,045.43 × 30,323.54
  4. Step 4: Simplify right side
    74,697.16x = 3,397,614,078.42
  5. Step 5: Solve for x
    x = 3,397,614,078.42/74,697.16
  6. Step 6: Final answer
    x = 45,485.18

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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.