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Finding the Fourth Proportional to 43,242.99, 64,817.10 and 16,918.80

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Solution

The fourth proportional to 43,242.99, 64,817.10 and 16,918.80 is: 25,359.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,242.99 : 64,817.10 = 16,918.80 : x
  2. Step 2: Convert to fraction form
    43,242.99/64,817.10 = 16,918.80/x
  3. Step 3: Cross multiply
    43,242.99x = 64,817.10 × 16,918.80
  4. Step 4: Simplify right side
    43,242.99x = 1,096,627,551.48
  5. Step 5: Solve for x
    x = 1,096,627,551.48/43,242.99
  6. Step 6: Final answer
    x = 25,359.66

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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.