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Finding the Fourth Proportional to 207,860.76, 311,823.72 and 67,586.52

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Solution

The fourth proportional to 207,860.76, 311,823.72 and 67,586.52 is: 101,390.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,860.76 : 311,823.72 = 67,586.52 : x
  2. Step 2: Convert to fraction form
    207,860.76/311,823.72 = 67,586.52/x
  3. Step 3: Cross multiply
    207,860.76x = 311,823.72 × 67,586.52
  4. Step 4: Simplify right side
    207,860.76x = 21,075,080,088.25
  5. Step 5: Solve for x
    x = 21,075,080,088.25/207,860.76
  6. Step 6: Final answer
    x = 101,390.37

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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.