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Finding the Fourth Proportional to 461,939.40, 692,390.70 and 262,355.40

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Solution

The fourth proportional to 461,939.40, 692,390.70 and 262,355.40 is: 393,238.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,939.40 : 692,390.70 = 262,355.40 : x
  2. Step 2: Convert to fraction form
    461,939.40/692,390.70 = 262,355.40/x
  3. Step 3: Cross multiply
    461,939.40x = 692,390.70 × 262,355.40
  4. Step 4: Simplify right side
    461,939.40x = 181,652,439,054.78
  5. Step 5: Solve for x
    x = 181,652,439,054.78/461,939.40
  6. Step 6: Final answer
    x = 393,238.68

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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.