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Finding the Fourth Proportional to 326,630.40, 489,945.60 and 116,505.60

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Solution

The fourth proportional to 326,630.40, 489,945.60 and 116,505.60 is: 174,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,630.40 : 489,945.60 = 116,505.60 : x
  2. Step 2: Convert to fraction form
    326,630.40/489,945.60 = 116,505.60/x
  3. Step 3: Cross multiply
    326,630.40x = 489,945.60 × 116,505.60
  4. Step 4: Simplify right side
    326,630.40x = 57,081,406,095.36
  5. Step 5: Solve for x
    x = 57,081,406,095.36/326,630.40
  6. Step 6: Final answer
    x = 174,758.40

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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.