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Finding the Fourth Proportional to 86,136.80, 128,950.05 and 64,048.10

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Solution

The fourth proportional to 86,136.80, 128,950.05 and 64,048.10 is: 95,882.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,136.80 : 128,950.05 = 64,048.10 : x
  2. Step 2: Convert to fraction form
    86,136.80/128,950.05 = 64,048.10/x
  3. Step 3: Cross multiply
    86,136.80x = 128,950.05 × 64,048.10
  4. Step 4: Simplify right side
    86,136.80x = 8,259,005,697.41
  5. Step 5: Solve for x
    x = 8,259,005,697.41/86,136.80
  6. Step 6: Final answer
    x = 95,882.43

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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.