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Finding the Fourth Proportional to 157,874.50, 236,928.63 and 74,768.74

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Solution

The fourth proportional to 157,874.50, 236,928.63 and 74,768.74 is: 112,208.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,874.50 : 236,928.63 = 74,768.74 : x
  2. Step 2: Convert to fraction form
    157,874.50/236,928.63 = 74,768.74/x
  3. Step 3: Cross multiply
    157,874.50x = 236,928.63 × 74,768.74
  4. Step 4: Simplify right side
    157,874.50x = 17,714,855,135.03
  5. Step 5: Solve for x
    x = 17,714,855,135.03/157,874.50
  6. Step 6: Final answer
    x = 112,208.46

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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.