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Finding the Fourth Proportional to 165,368.40, 248,052.60 and 106,319.40

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Solution

The fourth proportional to 165,368.40, 248,052.60 and 106,319.40 is: 159,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,368.40 : 248,052.60 = 106,319.40 : x
  2. Step 2: Convert to fraction form
    165,368.40/248,052.60 = 106,319.40/x
  3. Step 3: Cross multiply
    165,368.40x = 248,052.60 × 106,319.40
  4. Step 4: Simplify right side
    165,368.40x = 26,372,803,600.44
  5. Step 5: Solve for x
    x = 26,372,803,600.44/165,368.40
  6. Step 6: Final answer
    x = 159,479.10

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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.