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Finding the Fourth Proportional to 178,578.68, 246,430.86 and 98,007.57

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Solution

The fourth proportional to 178,578.68, 246,430.86 and 98,007.57 is: 135,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,578.68 : 246,430.86 = 98,007.57 : x
  2. Step 2: Convert to fraction form
    178,578.68/246,430.86 = 98,007.57/x
  3. Step 3: Cross multiply
    178,578.68x = 246,430.86 × 98,007.57
  4. Step 4: Simplify right side
    178,578.68x = 24,152,089,394.08
  5. Step 5: Solve for x
    x = 24,152,089,394.08/178,578.68
  6. Step 6: Final answer
    x = 135,246.21

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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.