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Finding the Fourth Proportional to 66,509.15, 91,778.95 and 37,824.94

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Solution

The fourth proportional to 66,509.15, 91,778.95 and 37,824.94 is: 52,196.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509.15 : 91,778.95 = 37,824.94 : x
  2. Step 2: Convert to fraction form
    66,509.15/91,778.95 = 37,824.94/x
  3. Step 3: Cross multiply
    66,509.15x = 91,778.95 × 37,824.94
  4. Step 4: Simplify right side
    66,509.15x = 3,471,533,277.01
  5. Step 5: Solve for x
    x = 3,471,533,277.01/66,509.15
  6. Step 6: Final answer
    x = 52,196.33

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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.