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Finding the Fourth Proportional to 116,542.80, 174,814.20 and 103,420.80

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Solution

The fourth proportional to 116,542.80, 174,814.20 and 103,420.80 is: 155,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,542.80 : 174,814.20 = 103,420.80 : x
  2. Step 2: Convert to fraction form
    116,542.80/174,814.20 = 103,420.80/x
  3. Step 3: Cross multiply
    116,542.80x = 174,814.20 × 103,420.80
  4. Step 4: Simplify right side
    116,542.80x = 18,079,424,415.36
  5. Step 5: Solve for x
    x = 18,079,424,415.36/116,542.80
  6. Step 6: Final answer
    x = 155,131.20

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1.5x scale

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.