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Finding the Fourth Proportional to 368,889.60, 553,431.60 and 132,207.60

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Solution

The fourth proportional to 368,889.60, 553,431.60 and 132,207.60 is: 198,346.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,889.60 : 553,431.60 = 132,207.60 : x
  2. Step 2: Convert to fraction form
    368,889.60/553,431.60 = 132,207.60/x
  3. Step 3: Cross multiply
    368,889.60x = 553,431.60 × 132,207.60
  4. Step 4: Simplify right side
    368,889.60x = 73,167,863,600.16
  5. Step 5: Solve for x
    x = 73,167,863,600.16/368,889.60
  6. Step 6: Final answer
    x = 198,346.24

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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.