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Finding the Fourth Proportional to 66,203.69, 91,357.25 and 35,988.75

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Solution

The fourth proportional to 66,203.69, 91,357.25 and 35,988.75 is: 49,662.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203.69 : 91,357.25 = 35,988.75 : x
  2. Step 2: Convert to fraction form
    66,203.69/91,357.25 = 35,988.75/x
  3. Step 3: Cross multiply
    66,203.69x = 91,357.25 × 35,988.75
  4. Step 4: Simplify right side
    66,203.69x = 3,287,833,050.99
  5. Step 5: Solve for x
    x = 3,287,833,050.99/66,203.69
  6. Step 6: Final answer
    x = 49,662.39

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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.