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Finding the Fourth Proportional to 619,804.40, 929,706.60 and 430,847.60

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Solution

The fourth proportional to 619,804.40, 929,706.60 and 430,847.60 is: 646,271.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,804.40 : 929,706.60 = 430,847.60 : x
  2. Step 2: Convert to fraction form
    619,804.40/929,706.60 = 430,847.60/x
  3. Step 3: Cross multiply
    619,804.40x = 929,706.60 × 430,847.60
  4. Step 4: Simplify right side
    619,804.40x = 400,561,857,314.16
  5. Step 5: Solve for x
    x = 400,561,857,314.16/619,804.40
  6. Step 6: Final answer
    x = 646,271.40

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Similar ratio
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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.