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Finding the Fourth Proportional to 66,160.98, 91,302.12 and 37,866.60

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Solution

The fourth proportional to 66,160.98, 91,302.12 and 37,866.60 is: 52,255.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,160.98 : 91,302.12 = 37,866.60 : x
  2. Step 2: Convert to fraction form
    66,160.98/91,302.12 = 37,866.60/x
  3. Step 3: Cross multiply
    66,160.98x = 91,302.12 × 37,866.60
  4. Step 4: Simplify right side
    66,160.98x = 3,457,300,857.19
  5. Step 5: Solve for x
    x = 3,457,300,857.19/66,160.98
  6. Step 6: Final answer
    x = 52,255.89

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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.