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Finding the Fourth Proportional to 161,729.60, 242,551.20 and 49,409.60

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Solution

The fourth proportional to 161,729.60, 242,551.20 and 49,409.60 is: 74,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,729.60 : 242,551.20 = 49,409.60 : x
  2. Step 2: Convert to fraction form
    161,729.60/242,551.20 = 49,409.60/x
  3. Step 3: Cross multiply
    161,729.60x = 242,551.20 × 49,409.60
  4. Step 4: Simplify right side
    161,729.60x = 11,984,357,771.52
  5. Step 5: Solve for x
    x = 11,984,357,771.52/161,729.60
  6. Step 6: Final answer
    x = 74,101.20

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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.