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Finding the Fourth Proportional to 98,127.33, 147,187.89 and 28,006.65

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Solution

The fourth proportional to 98,127.33, 147,187.89 and 28,006.65 is: 42,009.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,127.33 : 147,187.89 = 28,006.65 : x
  2. Step 2: Convert to fraction form
    98,127.33/147,187.89 = 28,006.65/x
  3. Step 3: Cross multiply
    98,127.33x = 147,187.89 × 28,006.65
  4. Step 4: Simplify right side
    98,127.33x = 4,122,239,719.47
  5. Step 5: Solve for x
    x = 4,122,239,719.47/98,127.33
  6. Step 6: Final answer
    x = 42,009.09

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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.