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Finding the Fourth Proportional to 157,653.37, 217,566.30 and 86,038.03

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Solution

The fourth proportional to 157,653.37, 217,566.30 and 86,038.03 is: 118,735.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,653.37 : 217,566.30 = 86,038.03 : x
  2. Step 2: Convert to fraction form
    157,653.37/217,566.30 = 86,038.03/x
  3. Step 3: Cross multiply
    157,653.37x = 217,566.30 × 86,038.03
  4. Step 4: Simplify right side
    157,653.37x = 18,718,975,846.39
  5. Step 5: Solve for x
    x = 18,718,975,846.39/157,653.37
  6. Step 6: Final answer
    x = 118,735.02

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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.