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Finding the Fourth Proportional to 178,617.76, 246,483.60 and 103,161.76

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Solution

The fourth proportional to 178,617.76, 246,483.60 and 103,161.76 is: 142,358.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,617.76 : 246,483.60 = 103,161.76 : x
  2. Step 2: Convert to fraction form
    178,617.76/246,483.60 = 103,161.76/x
  3. Step 3: Cross multiply
    178,617.76x = 246,483.60 × 103,161.76
  4. Step 4: Simplify right side
    178,617.76x = 25,427,681,987.14
  5. Step 5: Solve for x
    x = 25,427,681,987.14/178,617.76
  6. Step 6: Final answer
    x = 142,358.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.