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Finding the Fourth Proportional to 235,312.80, 352,969.20 and 124,720.80

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Solution

The fourth proportional to 235,312.80, 352,969.20 and 124,720.80 is: 187,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,312.80 : 352,969.20 = 124,720.80 : x
  2. Step 2: Convert to fraction form
    235,312.80/352,969.20 = 124,720.80/x
  3. Step 3: Cross multiply
    235,312.80x = 352,969.20 × 124,720.80
  4. Step 4: Simplify right side
    235,312.80x = 44,022,600,999.36
  5. Step 5: Solve for x
    x = 44,022,600,999.36/235,312.80
  6. Step 6: Final answer
    x = 187,081.20

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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.