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Finding the Fourth Proportional to 101,695.50, 152,543.25 and 31,574.81

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Solution

The fourth proportional to 101,695.50, 152,543.25 and 31,574.81 is: 47,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,695.50 : 152,543.25 = 31,574.81 : x
  2. Step 2: Convert to fraction form
    101,695.50/152,543.25 = 31,574.81/x
  3. Step 3: Cross multiply
    101,695.50x = 152,543.25 × 31,574.81
  4. Step 4: Simplify right side
    101,695.50x = 4,816,524,516.89
  5. Step 5: Solve for x
    x = 4,816,524,516.89/101,695.50
  6. Step 6: Final answer
    x = 47,362.22

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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.