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Finding the Fourth Proportional to 105,095.40, 157,383.90 and 69,844.20

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Solution

The fourth proportional to 105,095.40, 157,383.90 and 69,844.20 is: 104,594.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,095.40 : 157,383.90 = 69,844.20 : x
  2. Step 2: Convert to fraction form
    105,095.40/157,383.90 = 69,844.20/x
  3. Step 3: Cross multiply
    105,095.40x = 157,383.90 × 69,844.20
  4. Step 4: Simplify right side
    105,095.40x = 10,992,352,588.38
  5. Step 5: Solve for x
    x = 10,992,352,588.38/105,095.40
  6. Step 6: Final answer
    x = 104,594.04

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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.