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Finding the Fourth Proportional to 354,116.48, 488,680.80 and 192,971.60

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Solution

The fourth proportional to 354,116.48, 488,680.80 and 192,971.60 is: 266,300.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,116.48 : 488,680.80 = 192,971.60 : x
  2. Step 2: Convert to fraction form
    354,116.48/488,680.80 = 192,971.60/x
  3. Step 3: Cross multiply
    354,116.48x = 488,680.80 × 192,971.60
  4. Step 4: Simplify right side
    354,116.48x = 94,301,515,865.28
  5. Step 5: Solve for x
    x = 94,301,515,865.28/354,116.48
  6. Step 6: Final answer
    x = 266,300.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.