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Finding the Fourth Proportional to 492,223.21, 679,268.01 and 265,868.71

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Solution

The fourth proportional to 492,223.21, 679,268.01 and 265,868.71 is: 366,898.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,223.21 : 679,268.01 = 265,868.71 : x
  2. Step 2: Convert to fraction form
    492,223.21/679,268.01 = 265,868.71/x
  3. Step 3: Cross multiply
    492,223.21x = 679,268.01 × 265,868.71
  4. Step 4: Simplify right side
    492,223.21x = 180,596,109,562.97
  5. Step 5: Solve for x
    x = 180,596,109,562.97/492,223.21
  6. Step 6: Final answer
    x = 366,898.81

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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.