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Finding the Fourth Proportional to 207,870.48, 311,786.28 and 58,124.16

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Solution

The fourth proportional to 207,870.48, 311,786.28 and 58,124.16 is: 87,180.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,870.48 : 311,786.28 = 58,124.16 : x
  2. Step 2: Convert to fraction form
    207,870.48/311,786.28 = 58,124.16/x
  3. Step 3: Cross multiply
    207,870.48x = 311,786.28 × 58,124.16
  4. Step 4: Simplify right side
    207,870.48x = 18,122,315,624.52
  5. Step 5: Solve for x
    x = 18,122,315,624.52/207,870.48
  6. Step 6: Final answer
    x = 87,180.80

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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.