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Finding the Fourth Proportional to 210,052.80, 315,079.20 and 177,247.80

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Solution

The fourth proportional to 210,052.80, 315,079.20 and 177,247.80 is: 265,871.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,052.80 : 315,079.20 = 177,247.80 : x
  2. Step 2: Convert to fraction form
    210,052.80/315,079.20 = 177,247.80/x
  3. Step 3: Cross multiply
    210,052.80x = 315,079.20 × 177,247.80
  4. Step 4: Simplify right side
    210,052.80x = 55,847,095,025.76
  5. Step 5: Solve for x
    x = 55,847,095,025.76/210,052.80
  6. Step 6: Final answer
    x = 265,871.70

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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.