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Finding the Fourth Proportional to 116,530.80, 174,925.80 and 72,207.60

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Solution

The fourth proportional to 116,530.80, 174,925.80 and 72,207.60 is: 108,391.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,530.80 : 174,925.80 = 72,207.60 : x
  2. Step 2: Convert to fraction form
    116,530.80/174,925.80 = 72,207.60/x
  3. Step 3: Cross multiply
    116,530.80x = 174,925.80 × 72,207.60
  4. Step 4: Simplify right side
    116,530.80x = 12,630,972,196.08
  5. Step 5: Solve for x
    x = 12,630,972,196.08/116,530.80
  6. Step 6: Final answer
    x = 108,391.71

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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.