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Finding the Fourth Proportional to 492,697.76, 679,922.64 and 266,343.68

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Solution

The fourth proportional to 492,697.76, 679,922.64 and 266,343.68 is: 367,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,697.76 : 679,922.64 = 266,343.68 : x
  2. Step 2: Convert to fraction form
    492,697.76/679,922.64 = 266,343.68/x
  3. Step 3: Cross multiply
    492,697.76x = 679,922.64 × 266,343.68
  4. Step 4: Simplify right side
    492,697.76x = 181,093,098,052.92
  5. Step 5: Solve for x
    x = 181,093,098,052.92/492,697.76
  6. Step 6: Final answer
    x = 367,554.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.