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Finding the Fourth Proportional to 624,489.76, 861,584.40 and 406,598.94

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Solution

The fourth proportional to 624,489.76, 861,584.40 and 406,598.94 is: 560,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,489.76 : 861,584.40 = 406,598.94 : x
  2. Step 2: Convert to fraction form
    624,489.76/861,584.40 = 406,598.94/x
  3. Step 3: Cross multiply
    624,489.76x = 861,584.40 × 406,598.94
  4. Step 4: Simplify right side
    624,489.76x = 350,319,303,760.54
  5. Step 5: Solve for x
    x = 350,319,303,760.54/624,489.76
  6. Step 6: Final answer
    x = 560,968.85

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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.