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Finding the Fourth Proportional to 66,189.53, 91,341.60 and 37,895.42

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Solution

The fourth proportional to 66,189.53, 91,341.60 and 37,895.42 is: 52,295.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,189.53 : 91,341.60 = 37,895.42 : x
  2. Step 2: Convert to fraction form
    66,189.53/91,341.60 = 37,895.42/x
  3. Step 3: Cross multiply
    66,189.53x = 91,341.60 × 37,895.42
  4. Step 4: Simplify right side
    66,189.53x = 3,461,428,295.47
  5. Step 5: Solve for x
    x = 3,461,428,295.47/66,189.53
  6. Step 6: Final answer
    x = 52,295.71

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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.