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Finding the Fourth Proportional to 236,389.60, 354,536.72 and 86,578.74

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Solution

The fourth proportional to 236,389.60, 354,536.72 and 86,578.74 is: 129,850.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,389.60 : 354,536.72 = 86,578.74 : x
  2. Step 2: Convert to fraction form
    236,389.60/354,536.72 = 86,578.74/x
  3. Step 3: Cross multiply
    236,389.60x = 354,536.72 × 86,578.74
  4. Step 4: Simplify right side
    236,389.60x = 30,695,340,728.65
  5. Step 5: Solve for x
    x = 30,695,340,728.65/236,389.60
  6. Step 6: Final answer
    x = 129,850.64

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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.