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Finding the Fourth Proportional to 43,609.60, 65,284.80 and 26,070.40

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Solution

The fourth proportional to 43,609.60, 65,284.80 and 26,070.40 is: 39,028.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,609.60 : 65,284.80 = 26,070.40 : x
  2. Step 2: Convert to fraction form
    43,609.60/65,284.80 = 26,070.40/x
  3. Step 3: Cross multiply
    43,609.60x = 65,284.80 × 26,070.40
  4. Step 4: Simplify right side
    43,609.60x = 1,702,000,849.92
  5. Step 5: Solve for x
    x = 1,702,000,849.92/43,609.60
  6. Step 6: Final answer
    x = 39,028.12

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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.