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Finding the Fourth Proportional to 352,682.40, 529,072.20 and 127,988.40

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Solution

The fourth proportional to 352,682.40, 529,072.20 and 127,988.40 is: 192,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,682.40 : 529,072.20 = 127,988.40 : x
  2. Step 2: Convert to fraction form
    352,682.40/529,072.20 = 127,988.40/x
  3. Step 3: Cross multiply
    352,682.40x = 529,072.20 × 127,988.40
  4. Step 4: Simplify right side
    352,682.40x = 67,715,104,362.48
  5. Step 5: Solve for x
    x = 67,715,104,362.48/352,682.40
  6. Step 6: Final answer
    x = 192,000.24

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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.