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Finding the Fourth Proportional to 58,479.36, 80,609.76 and 51,393.60

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Solution

The fourth proportional to 58,479.36, 80,609.76 and 51,393.60 is: 70,842.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,479.36 : 80,609.76 = 51,393.60 : x
  2. Step 2: Convert to fraction form
    58,479.36/80,609.76 = 51,393.60/x
  3. Step 3: Cross multiply
    58,479.36x = 80,609.76 × 51,393.60
  4. Step 4: Simplify right side
    58,479.36x = 4,142,825,761.54
  5. Step 5: Solve for x
    x = 4,142,825,761.54/58,479.36
  6. Step 6: Final answer
    x = 70,842.53

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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.