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Finding the Fourth Proportional to 104,578.40, 156,608.40 and 83,842.40

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Solution

The fourth proportional to 104,578.40, 156,608.40 and 83,842.40 is: 125,555.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,578.40 : 156,608.40 = 83,842.40 : x
  2. Step 2: Convert to fraction form
    104,578.40/156,608.40 = 83,842.40/x
  3. Step 3: Cross multiply
    104,578.40x = 156,608.40 × 83,842.40
  4. Step 4: Simplify right side
    104,578.40x = 13,130,424,116.16
  5. Step 5: Solve for x
    x = 13,130,424,116.16/104,578.40
  6. Step 6: Final answer
    x = 125,555.79

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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.