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Finding the Fourth Proportional to 103,967.71, 143,472.21 and 58,645.03

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Solution

The fourth proportional to 103,967.71, 143,472.21 and 58,645.03 is: 80,928.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,967.71 : 143,472.21 = 58,645.03 : x
  2. Step 2: Convert to fraction form
    103,967.71/143,472.21 = 58,645.03/x
  3. Step 3: Cross multiply
    103,967.71x = 143,472.21 × 58,645.03
  4. Step 4: Simplify right side
    103,967.71x = 8,413,932,059.62
  5. Step 5: Solve for x
    x = 8,413,932,059.62/103,967.71
  6. Step 6: Final answer
    x = 80,928.32

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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.