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Finding the Fourth Proportional to 238,512.79, 357,643.36 and 105,330.03

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Solution

The fourth proportional to 238,512.79, 357,643.36 and 105,330.03 is: 157,939.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,512.79 : 357,643.36 = 105,330.03 : x
  2. Step 2: Convert to fraction form
    238,512.79/357,643.36 = 105,330.03/x
  3. Step 3: Cross multiply
    238,512.79x = 357,643.36 × 105,330.03
  4. Step 4: Simplify right side
    238,512.79x = 37,670,585,838.10
  5. Step 5: Solve for x
    x = 37,670,585,838.10/238,512.79
  6. Step 6: Final answer
    x = 157,939.48

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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.