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Finding the Fourth Proportional to 117,693.78, 176,618.43 and 55,369.14

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Solution

The fourth proportional to 117,693.78, 176,618.43 and 55,369.14 is: 83,090.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,693.78 : 176,618.43 = 55,369.14 : x
  2. Step 2: Convert to fraction form
    117,693.78/176,618.43 = 55,369.14/x
  3. Step 3: Cross multiply
    117,693.78x = 176,618.43 × 55,369.14
  4. Step 4: Simplify right side
    117,693.78x = 9,779,210,577.25
  5. Step 5: Solve for x
    x = 9,779,210,577.25/117,693.78
  6. Step 6: Final answer
    x = 83,090.29

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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.