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Finding the Fourth Proportional to 98,754.61, 148,131.92 and 54,358.51

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Solution

The fourth proportional to 98,754.61, 148,131.92 and 54,358.51 is: 81,537.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,754.61 : 148,131.92 = 54,358.51 : x
  2. Step 2: Convert to fraction form
    98,754.61/148,131.92 = 54,358.51/x
  3. Step 3: Cross multiply
    98,754.61x = 148,131.92 × 54,358.51
  4. Step 4: Simplify right side
    98,754.61x = 8,052,230,454.64
  5. Step 5: Solve for x
    x = 8,052,230,454.64/98,754.61
  6. Step 6: Final answer
    x = 81,537.77

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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.