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Finding the Fourth Proportional to 313,768.40, 470,652.60 and 166,312.40

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Solution

The fourth proportional to 313,768.40, 470,652.60 and 166,312.40 is: 249,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,768.40 : 470,652.60 = 166,312.40 : x
  2. Step 2: Convert to fraction form
    313,768.40/470,652.60 = 166,312.40/x
  3. Step 3: Cross multiply
    313,768.40x = 470,652.60 × 166,312.40
  4. Step 4: Simplify right side
    313,768.40x = 78,275,363,472.24
  5. Step 5: Solve for x
    x = 78,275,363,472.24/313,768.40
  6. Step 6: Final answer
    x = 249,468.60

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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.