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Finding the Fourth Proportional to 77,520.28, 116,259.16 and 21,347.20

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Solution

The fourth proportional to 77,520.28, 116,259.16 and 21,347.20 is: 32,014.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,520.28 : 116,259.16 = 21,347.20 : x
  2. Step 2: Convert to fraction form
    77,520.28/116,259.16 = 21,347.20/x
  3. Step 3: Cross multiply
    77,520.28x = 116,259.16 × 21,347.20
  4. Step 4: Simplify right side
    77,520.28x = 2,481,807,540.35
  5. Step 5: Solve for x
    x = 2,481,807,540.35/77,520.28
  6. Step 6: Final answer
    x = 32,014.95

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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.