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Finding the Fourth Proportional to 98,552.56, 147,939.41 and 39,429.45

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Solution

The fourth proportional to 98,552.56, 147,939.41 and 39,429.45 is: 59,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,552.56 : 147,939.41 = 39,429.45 : x
  2. Step 2: Convert to fraction form
    98,552.56/147,939.41 = 39,429.45/x
  3. Step 3: Cross multiply
    98,552.56x = 147,939.41 × 39,429.45
  4. Step 4: Simplify right side
    98,552.56x = 5,833,168,632.78
  5. Step 5: Solve for x
    x = 5,833,168,632.78/98,552.56
  6. Step 6: Final answer
    x = 59,188.40

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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.