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Finding the Fourth Proportional to 157,408.64, 236,118.72 and 63,912.32

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Solution

The fourth proportional to 157,408.64, 236,118.72 and 63,912.32 is: 95,870.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,408.64 : 236,118.72 = 63,912.32 : x
  2. Step 2: Convert to fraction form
    157,408.64/236,118.72 = 63,912.32/x
  3. Step 3: Cross multiply
    157,408.64x = 236,118.72 × 63,912.32
  4. Step 4: Simplify right side
    157,408.64x = 15,090,895,190.63
  5. Step 5: Solve for x
    x = 15,090,895,190.63/157,408.64
  6. Step 6: Final answer
    x = 95,870.82

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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.