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Finding the Fourth Proportional to 64,816.71, 89,448.62 and 36,136.23

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Solution

The fourth proportional to 64,816.71, 89,448.62 and 36,136.23 is: 49,868.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,816.71 : 89,448.62 = 36,136.23 : x
  2. Step 2: Convert to fraction form
    64,816.71/89,448.62 = 36,136.23/x
  3. Step 3: Cross multiply
    64,816.71x = 89,448.62 × 36,136.23
  4. Step 4: Simplify right side
    64,816.71x = 3,232,335,724.82
  5. Step 5: Solve for x
    x = 3,232,335,724.82/64,816.71
  6. Step 6: Final answer
    x = 49,868.86

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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.