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Finding the Fourth Proportional to 98,176.80, 147,270.32 and 28,066.72

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Solution

The fourth proportional to 98,176.80, 147,270.32 and 28,066.72 is: 42,101.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,176.80 : 147,270.32 = 28,066.72 : x
  2. Step 2: Convert to fraction form
    98,176.80/147,270.32 = 28,066.72/x
  3. Step 3: Cross multiply
    98,176.80x = 147,270.32 × 28,066.72
  4. Step 4: Simplify right side
    98,176.80x = 4,133,394,835.75
  5. Step 5: Solve for x
    x = 4,133,394,835.75/98,176.80
  6. Step 6: Final answer
    x = 42,101.54

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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.