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Finding the Fourth Proportional to 272,142.60, 408,116.70 and 94,655.40

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Solution

The fourth proportional to 272,142.60, 408,116.70 and 94,655.40 is: 141,949.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,142.60 : 408,116.70 = 94,655.40 : x
  2. Step 2: Convert to fraction form
    272,142.60/408,116.70 = 94,655.40/x
  3. Step 3: Cross multiply
    272,142.60x = 408,116.70 × 94,655.40
  4. Step 4: Simplify right side
    272,142.60x = 38,630,449,485.18
  5. Step 5: Solve for x
    x = 38,630,449,485.18/272,142.60
  6. Step 6: Final answer
    x = 141,949.29

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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.