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Finding the Fourth Proportional to 157,661.20, 236,491.80 and 98,563.60

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Solution

The fourth proportional to 157,661.20, 236,491.80 and 98,563.60 is: 147,845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,661.20 : 236,491.80 = 98,563.60 : x
  2. Step 2: Convert to fraction form
    157,661.20/236,491.80 = 98,563.60/x
  3. Step 3: Cross multiply
    157,661.20x = 236,491.80 × 98,563.60
  4. Step 4: Simplify right side
    157,661.20x = 23,309,483,178.48
  5. Step 5: Solve for x
    x = 23,309,483,178.48/157,661.20
  6. Step 6: Final answer
    x = 147,845.40

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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.