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Finding the Fourth Proportional to 73,061.40, 109,592.10 and 48,129.60

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Solution

The fourth proportional to 73,061.40, 109,592.10 and 48,129.60 is: 72,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,061.40 : 109,592.10 = 48,129.60 : x
  2. Step 2: Convert to fraction form
    73,061.40/109,592.10 = 48,129.60/x
  3. Step 3: Cross multiply
    73,061.40x = 109,592.10 × 48,129.60
  4. Step 4: Simplify right side
    73,061.40x = 5,274,623,936.16
  5. Step 5: Solve for x
    x = 5,274,623,936.16/73,061.40
  6. Step 6: Final answer
    x = 72,194.40

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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.