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Finding the Fourth Proportional to 103,633.73, 143,014.54 and 58,921.73

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Solution

The fourth proportional to 103,633.73, 143,014.54 and 58,921.73 is: 81,311.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,633.73 : 143,014.54 = 58,921.73 : x
  2. Step 2: Convert to fraction form
    103,633.73/143,014.54 = 58,921.73/x
  3. Step 3: Cross multiply
    103,633.73x = 143,014.54 × 58,921.73
  4. Step 4: Simplify right side
    103,633.73x = 8,426,664,111.95
  5. Step 5: Solve for x
    x = 8,426,664,111.95/103,633.73
  6. Step 6: Final answer
    x = 81,311.98

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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.