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Finding the Fourth Proportional to 64,320.32, 96,489.81 and 19,950.65

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Solution

The fourth proportional to 64,320.32, 96,489.81 and 19,950.65 is: 29,928.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,320.32 : 96,489.81 = 19,950.65 : x
  2. Step 2: Convert to fraction form
    64,320.32/96,489.81 = 19,950.65/x
  3. Step 3: Cross multiply
    64,320.32x = 96,489.81 × 19,950.65
  4. Step 4: Simplify right side
    64,320.32x = 1,925,034,427.88
  5. Step 5: Solve for x
    x = 1,925,034,427.88/64,320.32
  6. Step 6: Final answer
    x = 29,928.87

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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.