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Finding the Fourth Proportional to 157,898.58, 217,899.80 and 89,915.56

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Solution

The fourth proportional to 157,898.58, 217,899.80 and 89,915.56 is: 124,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,898.58 : 217,899.80 = 89,915.56 : x
  2. Step 2: Convert to fraction form
    157,898.58/217,899.80 = 89,915.56/x
  3. Step 3: Cross multiply
    157,898.58x = 217,899.80 × 89,915.56
  4. Step 4: Simplify right side
    157,898.58x = 19,592,582,540.89
  5. Step 5: Solve for x
    x = 19,592,582,540.89/157,898.58
  6. Step 6: Final answer
    x = 124,083.34

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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.