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Finding the Fourth Proportional to 168,765.60, 253,148.64 and 68,925.81

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Solution

The fourth proportional to 168,765.60, 253,148.64 and 68,925.81 is: 103,388.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,765.60 : 253,148.64 = 68,925.81 : x
  2. Step 2: Convert to fraction form
    168,765.60/253,148.64 = 68,925.81/x
  3. Step 3: Cross multiply
    168,765.60x = 253,148.64 × 68,925.81
  4. Step 4: Simplify right side
    168,765.60x = 17,448,475,062.40
  5. Step 5: Solve for x
    x = 17,448,475,062.40/168,765.60
  6. Step 6: Final answer
    x = 103,388.81

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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.