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Finding the Fourth Proportional to 73,210.70, 109,945.65 and 56,611.10

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Solution

The fourth proportional to 73,210.70, 109,945.65 and 56,611.10 is: 85,016.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,210.70 : 109,945.65 = 56,611.10 : x
  2. Step 2: Convert to fraction form
    73,210.70/109,945.65 = 56,611.10/x
  3. Step 3: Cross multiply
    73,210.70x = 109,945.65 × 56,611.10
  4. Step 4: Simplify right side
    73,210.70x = 6,224,144,186.72
  5. Step 5: Solve for x
    x = 6,224,144,186.72/73,210.70
  6. Step 6: Final answer
    x = 85,016.86

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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.