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Finding the Fourth Proportional to 165,558.20, 248,337.30 and 65,742.20

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Solution

The fourth proportional to 165,558.20, 248,337.30 and 65,742.20 is: 98,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,558.20 : 248,337.30 = 65,742.20 : x
  2. Step 2: Convert to fraction form
    165,558.20/248,337.30 = 65,742.20/x
  3. Step 3: Cross multiply
    165,558.20x = 248,337.30 × 65,742.20
  4. Step 4: Simplify right side
    165,558.20x = 16,326,240,444.06
  5. Step 5: Solve for x
    x = 16,326,240,444.06/165,558.20
  6. Step 6: Final answer
    x = 98,613.30

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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.