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Finding the Fourth Proportional to 57,964.80, 86,752.80 and 50,966.40

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Solution

The fourth proportional to 57,964.80, 86,752.80 and 50,966.40 is: 76,278.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,964.80 : 86,752.80 = 50,966.40 : x
  2. Step 2: Convert to fraction form
    57,964.80/86,752.80 = 50,966.40/x
  3. Step 3: Cross multiply
    57,964.80x = 86,752.80 × 50,966.40
  4. Step 4: Simplify right side
    57,964.80x = 4,421,477,905.92
  5. Step 5: Solve for x
    x = 4,421,477,905.92/57,964.80
  6. Step 6: Final answer
    x = 76,278.67

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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.