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Finding the Fourth Proportional to 30,615.36, 45,918.72 and 9,550.50

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Solution

The fourth proportional to 30,615.36, 45,918.72 and 9,550.50 is: 14,324.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,615.36 : 45,918.72 = 9,550.50 : x
  2. Step 2: Convert to fraction form
    30,615.36/45,918.72 = 9,550.50/x
  3. Step 3: Cross multiply
    30,615.36x = 45,918.72 × 9,550.50
  4. Step 4: Simplify right side
    30,615.36x = 438,546,735.36
  5. Step 5: Solve for x
    x = 438,546,735.36/30,615.36
  6. Step 6: Final answer
    x = 14,324.40

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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.