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Finding the Fourth Proportional to 51,480.36, 70,828.49 and 45,404.15

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Solution

The fourth proportional to 51,480.36, 70,828.49 and 45,404.15 is: 62,468.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,480.36 : 70,828.49 = 45,404.15 : x
  2. Step 2: Convert to fraction form
    51,480.36/70,828.49 = 45,404.15/x
  3. Step 3: Cross multiply
    51,480.36x = 70,828.49 × 45,404.15
  4. Step 4: Simplify right side
    51,480.36x = 3,215,906,803.07
  5. Step 5: Solve for x
    x = 3,215,906,803.07/51,480.36
  6. Step 6: Final answer
    x = 62,468.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.