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Finding the Fourth Proportional to 157,816.40, 236,627.40 and 91,223.60

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Solution

The fourth proportional to 157,816.40, 236,627.40 and 91,223.60 is: 136,779.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,816.40 : 236,627.40 = 91,223.60 : x
  2. Step 2: Convert to fraction form
    157,816.40/236,627.40 = 91,223.60/x
  3. Step 3: Cross multiply
    157,816.40x = 236,627.40 × 91,223.60
  4. Step 4: Simplify right side
    157,816.40x = 21,586,003,286.64
  5. Step 5: Solve for x
    x = 21,586,003,286.64/157,816.40
  6. Step 6: Final answer
    x = 136,779.21

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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.