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Finding the Fourth Proportional to 159,087.70, 238,631.55 and 133,038.10

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Solution

The fourth proportional to 159,087.70, 238,631.55 and 133,038.10 is: 199,557.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,087.70 : 238,631.55 = 133,038.10 : x
  2. Step 2: Convert to fraction form
    159,087.70/238,631.55 = 133,038.10/x
  3. Step 3: Cross multiply
    159,087.70x = 238,631.55 × 133,038.10
  4. Step 4: Simplify right side
    159,087.70x = 31,747,088,012.06
  5. Step 5: Solve for x
    x = 31,747,088,012.06/159,087.70
  6. Step 6: Final answer
    x = 199,557.15

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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.