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Finding the Fourth Proportional to 178,981.98, 246,989.90 and 98,409.42

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Solution

The fourth proportional to 178,981.98, 246,989.90 and 98,409.42 is: 135,802.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,981.98 : 246,989.90 = 98,409.42 : x
  2. Step 2: Convert to fraction form
    178,981.98/246,989.90 = 98,409.42/x
  3. Step 3: Cross multiply
    178,981.98x = 246,989.90 × 98,409.42
  4. Step 4: Simplify right side
    178,981.98x = 24,306,132,804.86
  5. Step 5: Solve for x
    x = 24,306,132,804.86/178,981.98
  6. Step 6: Final answer
    x = 135,802.12

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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.