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Finding the Fourth Proportional to 66,155.67, 91,302.81 and 37,860.75

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Solution

The fourth proportional to 66,155.67, 91,302.81 and 37,860.75 is: 52,252.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,155.67 : 91,302.81 = 37,860.75 : x
  2. Step 2: Convert to fraction form
    66,155.67/91,302.81 = 37,860.75/x
  3. Step 3: Cross multiply
    66,155.67x = 91,302.81 × 37,860.75
  4. Step 4: Simplify right side
    66,155.67x = 3,456,792,863.71
  5. Step 5: Solve for x
    x = 3,456,792,863.71/66,155.67
  6. Step 6: Final answer
    x = 52,252.41

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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.