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Finding the Fourth Proportional to 58,479.09, 80,701.09 and 31,621.54

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Solution

The fourth proportional to 58,479.09, 80,701.09 and 31,621.54 is: 43,637.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,479.09 : 80,701.09 = 31,621.54 : x
  2. Step 2: Convert to fraction form
    58,479.09/80,701.09 = 31,621.54/x
  3. Step 3: Cross multiply
    58,479.09x = 80,701.09 × 31,621.54
  4. Step 4: Simplify right side
    58,479.09x = 2,551,892,583.25
  5. Step 5: Solve for x
    x = 2,551,892,583.25/58,479.09
  6. Step 6: Final answer
    x = 43,637.69

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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.