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Finding the Fourth Proportional to 352,673.40, 529,058.70 and 127,979.40

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Solution

The fourth proportional to 352,673.40, 529,058.70 and 127,979.40 is: 191,986.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,673.40 : 529,058.70 = 127,979.40 : x
  2. Step 2: Convert to fraction form
    352,673.40/529,058.70 = 127,979.40/x
  3. Step 3: Cross multiply
    352,673.40x = 529,058.70 × 127,979.40
  4. Step 4: Simplify right side
    352,673.40x = 67,708,614,990.78
  5. Step 5: Solve for x
    x = 67,708,614,990.78/352,673.40
  6. Step 6: Final answer
    x = 191,986.74

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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.