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Finding the Fourth Proportional to 64,553.62, 89,080.77 and 39,065.62

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Solution

The fourth proportional to 64,553.62, 89,080.77 and 39,065.62 is: 53,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,553.62 : 89,080.77 = 39,065.62 : x
  2. Step 2: Convert to fraction form
    64,553.62/89,080.77 = 39,065.62/x
  3. Step 3: Cross multiply
    64,553.62x = 89,080.77 × 39,065.62
  4. Step 4: Simplify right side
    64,553.62x = 3,479,995,510.13
  5. Step 5: Solve for x
    x = 3,479,995,510.13/64,553.62
  6. Step 6: Final answer
    x = 53,908.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.