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Finding the Fourth Proportional to 64,908.55, 97,352.70 and 20,546.20

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Solution

The fourth proportional to 64,908.55, 97,352.70 and 20,546.20 is: 30,816.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,908.55 : 97,352.70 = 20,546.20 : x
  2. Step 2: Convert to fraction form
    64,908.55/97,352.70 = 20,546.20/x
  3. Step 3: Cross multiply
    64,908.55x = 97,352.70 × 20,546.20
  4. Step 4: Simplify right side
    64,908.55x = 2,000,228,044.74
  5. Step 5: Solve for x
    x = 2,000,228,044.74/64,908.55
  6. Step 6: Final answer
    x = 30,816.10

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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.