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Finding the Fourth Proportional to 352,666.80, 528,770.16 and 127,984.68

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Solution

The fourth proportional to 352,666.80, 528,770.16 and 127,984.68 is: 191,893.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,666.80 : 528,770.16 = 127,984.68 : x
  2. Step 2: Convert to fraction form
    352,666.80/528,770.16 = 127,984.68/x
  3. Step 3: Cross multiply
    352,666.80x = 528,770.16 × 127,984.68
  4. Step 4: Simplify right side
    352,666.80x = 67,674,479,721.15
  5. Step 5: Solve for x
    x = 67,674,479,721.15/352,666.80
  6. Step 6: Final answer
    x = 191,893.54

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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.