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Finding the Fourth Proportional to 157,458.21, 236,188.53 and 57,621.66

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Solution

The fourth proportional to 157,458.21, 236,188.53 and 57,621.66 is: 86,432.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,458.21 : 236,188.53 = 57,621.66 : x
  2. Step 2: Convert to fraction form
    157,458.21/236,188.53 = 57,621.66/x
  3. Step 3: Cross multiply
    157,458.21x = 236,188.53 × 57,621.66
  4. Step 4: Simplify right side
    157,458.21x = 13,609,575,171.56
  5. Step 5: Solve for x
    x = 13,609,575,171.56/157,458.21
  6. Step 6: Final answer
    x = 86,432.93

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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.