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Finding the Fourth Proportional to 59,900.40, 89,872.20 and 57,740.40

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Solution

The fourth proportional to 59,900.40, 89,872.20 and 57,740.40 is: 86,631.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,900.40 : 89,872.20 = 57,740.40 : x
  2. Step 2: Convert to fraction form
    59,900.40/89,872.20 = 57,740.40/x
  3. Step 3: Cross multiply
    59,900.40x = 89,872.20 × 57,740.40
  4. Step 4: Simplify right side
    59,900.40x = 5,189,256,776.88
  5. Step 5: Solve for x
    x = 5,189,256,776.88/59,900.40
  6. Step 6: Final answer
    x = 86,631.42

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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.