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Finding the Fourth Proportional to 343,278.70, 514,918.05 and 156,654.70

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Solution

The fourth proportional to 343,278.70, 514,918.05 and 156,654.70 is: 234,982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,278.70 : 514,918.05 = 156,654.70 : x
  2. Step 2: Convert to fraction form
    343,278.70/514,918.05 = 156,654.70/x
  3. Step 3: Cross multiply
    343,278.70x = 514,918.05 × 156,654.70
  4. Step 4: Simplify right side
    343,278.70x = 80,664,332,647.34
  5. Step 5: Solve for x
    x = 80,664,332,647.34/343,278.70
  6. Step 6: Final answer
    x = 234,982.05

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1.5x scale

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.