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Finding the Fourth Proportional to 98,175.80, 147,268.82 and 28,065.72

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Solution

The fourth proportional to 98,175.80, 147,268.82 and 28,065.72 is: 42,100.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,175.80 : 147,268.82 = 28,065.72 : x
  2. Step 2: Convert to fraction form
    98,175.80/147,268.82 = 28,065.72/x
  3. Step 3: Cross multiply
    98,175.80x = 147,268.82 × 28,065.72
  4. Step 4: Simplify right side
    98,175.80x = 4,133,205,466.85
  5. Step 5: Solve for x
    x = 4,133,205,466.85/98,175.80
  6. Step 6: Final answer
    x = 42,100.04

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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.