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Finding the Fourth Proportional to 434,586.40, 651,879.60 and 397,261.60

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Solution

The fourth proportional to 434,586.40, 651,879.60 and 397,261.60 is: 595,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,586.40 : 651,879.60 = 397,261.60 : x
  2. Step 2: Convert to fraction form
    434,586.40/651,879.60 = 397,261.60/x
  3. Step 3: Cross multiply
    434,586.40x = 651,879.60 × 397,261.60
  4. Step 4: Simplify right side
    434,586.40x = 258,966,732,903.36
  5. Step 5: Solve for x
    x = 258,966,732,903.36/434,586.40
  6. Step 6: Final answer
    x = 595,892.40

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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.