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Finding the Fourth Proportional to 58,765.87, 88,109.65 and 21,321.09

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Solution

The fourth proportional to 58,765.87, 88,109.65 and 21,321.09 is: 31,967.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,765.87 : 88,109.65 = 21,321.09 : x
  2. Step 2: Convert to fraction form
    58,765.87/88,109.65 = 21,321.09/x
  3. Step 3: Cross multiply
    58,765.87x = 88,109.65 × 21,321.09
  4. Step 4: Simplify right side
    58,765.87x = 1,878,593,777.52
  5. Step 5: Solve for x
    x = 1,878,593,777.52/58,765.87
  6. Step 6: Final answer
    x = 31,967.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.