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Finding the Fourth Proportional to 258,710.60, 388,066.03 and 116,389.68

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Solution

The fourth proportional to 258,710.60, 388,066.03 and 116,389.68 is: 174,584.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,710.60 : 388,066.03 = 116,389.68 : x
  2. Step 2: Convert to fraction form
    258,710.60/388,066.03 = 116,389.68/x
  3. Step 3: Cross multiply
    258,710.60x = 388,066.03 × 116,389.68
  4. Step 4: Simplify right side
    258,710.60x = 45,166,880,759.60
  5. Step 5: Solve for x
    x = 45,166,880,759.60/258,710.60
  6. Step 6: Final answer
    x = 174,584.58

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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.