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Finding the Fourth Proportional to 133,078.60, 199,715.10 and 93,712.60

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Solution

The fourth proportional to 133,078.60, 199,715.10 and 93,712.60 is: 140,637.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,078.60 : 199,715.10 = 93,712.60 : x
  2. Step 2: Convert to fraction form
    133,078.60/199,715.10 = 93,712.60/x
  3. Step 3: Cross multiply
    133,078.60x = 199,715.10 × 93,712.60
  4. Step 4: Simplify right side
    133,078.60x = 18,715,821,280.26
  5. Step 5: Solve for x
    x = 18,715,821,280.26/133,078.60
  6. Step 6: Final answer
    x = 140,637.35

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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.