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Finding the Fourth Proportional to 98,554.56, 147,815.64 and 28,415.04

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Solution

The fourth proportional to 98,554.56, 147,815.64 and 28,415.04 is: 42,617.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,554.56 : 147,815.64 = 28,415.04 : x
  2. Step 2: Convert to fraction form
    98,554.56/147,815.64 = 28,415.04/x
  3. Step 3: Cross multiply
    98,554.56x = 147,815.64 × 28,415.04
  4. Step 4: Simplify right side
    98,554.56x = 4,200,187,323.23
  5. Step 5: Solve for x
    x = 4,200,187,323.23/98,554.56
  6. Step 6: Final answer
    x = 42,617.89

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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.