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Finding the Fourth Proportional to 65,357.81, 90,186.36 and 36,673.71

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Solution

The fourth proportional to 65,357.81, 90,186.36 and 36,673.71 is: 50,605.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,357.81 : 90,186.36 = 36,673.71 : x
  2. Step 2: Convert to fraction form
    65,357.81/90,186.36 = 36,673.71/x
  3. Step 3: Cross multiply
    65,357.81x = 90,186.36 × 36,673.71
  4. Step 4: Simplify right side
    65,357.81x = 3,307,468,412.60
  5. Step 5: Solve for x
    x = 3,307,468,412.60/65,357.81
  6. Step 6: Final answer
    x = 50,605.56

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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.