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Finding the Fourth Proportional to 621,104.60, 929,688.60 and 443,957.60

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Solution

The fourth proportional to 621,104.60, 929,688.60 and 443,957.60 is: 664,529.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,104.60 : 929,688.60 = 443,957.60 : x
  2. Step 2: Convert to fraction form
    621,104.60/929,688.60 = 443,957.60/x
  3. Step 3: Cross multiply
    621,104.60x = 929,688.60 × 443,957.60
  4. Step 4: Simplify right side
    621,104.60x = 412,742,319,603.36
  5. Step 5: Solve for x
    x = 412,742,319,603.36/621,104.60
  6. Step 6: Final answer
    x = 664,529.48

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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.