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Finding the Fourth Proportional to 313,862.60, 470,793.90 and 156,398.60

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Solution

The fourth proportional to 313,862.60, 470,793.90 and 156,398.60 is: 234,597.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,862.60 : 470,793.90 = 156,398.60 : x
  2. Step 2: Convert to fraction form
    313,862.60/470,793.90 = 156,398.60/x
  3. Step 3: Cross multiply
    313,862.60x = 470,793.90 × 156,398.60
  4. Step 4: Simplify right side
    313,862.60x = 73,631,506,848.54
  5. Step 5: Solve for x
    x = 73,631,506,848.54/313,862.60
  6. Step 6: Final answer
    x = 234,597.90

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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.