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Finding the Fourth Proportional to 59,790.32, 89,684.64 and 20,374.88

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Solution

The fourth proportional to 59,790.32, 89,684.64 and 20,374.88 is: 30,562.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,790.32 : 89,684.64 = 20,374.88 : x
  2. Step 2: Convert to fraction form
    59,790.32/89,684.64 = 20,374.88/x
  3. Step 3: Cross multiply
    59,790.32x = 89,684.64 × 20,374.88
  4. Step 4: Simplify right side
    59,790.32x = 1,827,313,777.84
  5. Step 5: Solve for x
    x = 1,827,313,777.84/59,790.32
  6. Step 6: Final answer
    x = 30,562.03

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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.