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Finding the Fourth Proportional to 65,357.11, 90,194.60 and 36,678.53

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Solution

The fourth proportional to 65,357.11, 90,194.60 and 36,678.53 is: 50,617.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,357.11 : 90,194.60 = 36,678.53 : x
  2. Step 2: Convert to fraction form
    65,357.11/90,194.60 = 36,678.53/x
  3. Step 3: Cross multiply
    65,357.11x = 90,194.60 × 36,678.53
  4. Step 4: Simplify right side
    65,357.11x = 3,308,205,341.94
  5. Step 5: Solve for x
    x = 3,308,205,341.94/65,357.11
  6. Step 6: Final answer
    x = 50,617.37

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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.