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Finding the Fourth Proportional to 352,604.40, 528,955.20 and 127,910.40

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Solution

The fourth proportional to 352,604.40, 528,955.20 and 127,910.40 is: 191,883.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,604.40 : 528,955.20 = 127,910.40 : x
  2. Step 2: Convert to fraction form
    352,604.40/528,955.20 = 127,910.40/x
  3. Step 3: Cross multiply
    352,604.40x = 528,955.20 × 127,910.40
  4. Step 4: Simplify right side
    352,604.40x = 67,658,871,214.08
  5. Step 5: Solve for x
    x = 67,658,871,214.08/352,604.40
  6. Step 6: Final answer
    x = 191,883.23

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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.