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Finding the Fourth Proportional to 157,674.33, 217,587.74 and 86,052.51

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Solution

The fourth proportional to 157,674.33, 217,587.74 and 86,052.51 is: 118,750.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,674.33 : 217,587.74 = 86,052.51 : x
  2. Step 2: Convert to fraction form
    157,674.33/217,587.74 = 86,052.51/x
  3. Step 3: Cross multiply
    157,674.33x = 217,587.74 × 86,052.51
  4. Step 4: Simplify right side
    157,674.33x = 18,723,970,741.96
  5. Step 5: Solve for x
    x = 18,723,970,741.96/157,674.33
  6. Step 6: Final answer
    x = 118,750.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.