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Finding the Fourth Proportional to 178,985.76, 247,005.72 and 98,409.12

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Solution

The fourth proportional to 178,985.76, 247,005.72 and 98,409.12 is: 135,807.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,985.76 : 247,005.72 = 98,409.12 : x
  2. Step 2: Convert to fraction form
    178,985.76/247,005.72 = 98,409.12/x
  3. Step 3: Cross multiply
    178,985.76x = 247,005.72 × 98,409.12
  4. Step 4: Simplify right side
    178,985.76x = 24,307,615,540.17
  5. Step 5: Solve for x
    x = 24,307,615,540.17/178,985.76
  6. Step 6: Final answer
    x = 135,807.54

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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.