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Finding the Fourth Proportional to 74,697.72, 112,044.33 and 30,323.40

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Solution

The fourth proportional to 74,697.72, 112,044.33 and 30,323.40 is: 45,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,697.72 : 112,044.33 = 30,323.40 : x
  2. Step 2: Convert to fraction form
    74,697.72/112,044.33 = 30,323.40/x
  3. Step 3: Cross multiply
    74,697.72x = 112,044.33 × 30,323.40
  4. Step 4: Simplify right side
    74,697.72x = 3,397,565,036.32
  5. Step 5: Solve for x
    x = 3,397,565,036.32/74,697.72
  6. Step 6: Final answer
    x = 45,484.19

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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.