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Finding the Fourth Proportional to 59,976.87, 89,905.10 and 20,507.00

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Solution

The fourth proportional to 59,976.87, 89,905.10 and 20,507.00 is: 30,739.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,976.87 : 89,905.10 = 20,507.00 : x
  2. Step 2: Convert to fraction form
    59,976.87/89,905.10 = 20,507.00/x
  3. Step 3: Cross multiply
    59,976.87x = 89,905.10 × 20,507.00
  4. Step 4: Simplify right side
    59,976.87x = 1,843,683,333.64
  5. Step 5: Solve for x
    x = 1,843,683,333.64/59,976.87
  6. Step 6: Final answer
    x = 30,739.91

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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.