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Finding the Fourth Proportional to 38,276.72, 57,430.78 and 16,918.14

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Solution

The fourth proportional to 38,276.72, 57,430.78 and 16,918.14 is: 25,384.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,276.72 : 57,430.78 = 16,918.14 : x
  2. Step 2: Convert to fraction form
    38,276.72/57,430.78 = 16,918.14/x
  3. Step 3: Cross multiply
    38,276.72x = 57,430.78 × 16,918.14
  4. Step 4: Simplify right side
    38,276.72x = 971,622,035.48
  5. Step 5: Solve for x
    x = 971,622,035.48/38,276.72
  6. Step 6: Final answer
    x = 25,384.15

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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.