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Finding the Fourth Proportional to 66,187.79, 91,338.96 and 35,973.12

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Solution

The fourth proportional to 66,187.79, 91,338.96 and 35,973.12 is: 49,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,187.79 : 91,338.96 = 35,973.12 : x
  2. Step 2: Convert to fraction form
    66,187.79/91,338.96 = 35,973.12/x
  3. Step 3: Cross multiply
    66,187.79x = 91,338.96 × 35,973.12
  4. Step 4: Simplify right side
    66,187.79x = 3,285,747,368.76
  5. Step 5: Solve for x
    x = 3,285,747,368.76/66,187.79
  6. Step 6: Final answer
    x = 49,642.80

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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.