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Finding the Fourth Proportional to 28,472.71, 39,310.83 and 25,483.36

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Solution

The fourth proportional to 28,472.71, 39,310.83 and 25,483.36 is: 35,183.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.71 : 39,310.83 = 25,483.36 : x
  2. Step 2: Convert to fraction form
    28,472.71/39,310.83 = 25,483.36/x
  3. Step 3: Cross multiply
    28,472.71x = 39,310.83 × 25,483.36
  4. Step 4: Simplify right side
    28,472.71x = 1,001,772,032.79
  5. Step 5: Solve for x
    x = 1,001,772,032.79/28,472.71
  6. Step 6: Final answer
    x = 35,183.59

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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.