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Finding the Fourth Proportional to 66,683.28, 91,638.06 and 63,599.52

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Solution

The fourth proportional to 66,683.28, 91,638.06 and 63,599.52 is: 87,400.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,683.28 : 91,638.06 = 63,599.52 : x
  2. Step 2: Convert to fraction form
    66,683.28/91,638.06 = 63,599.52/x
  3. Step 3: Cross multiply
    66,683.28x = 91,638.06 × 63,599.52
  4. Step 4: Simplify right side
    66,683.28x = 5,828,136,629.73
  5. Step 5: Solve for x
    x = 5,828,136,629.73/66,683.28
  6. Step 6: Final answer
    x = 87,400.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.