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Finding the Fourth Proportional to 66,023.31, 91,111.90 and 35,808.51

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Solution

The fourth proportional to 66,023.31, 91,111.90 and 35,808.51 is: 49,415.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,023.31 : 91,111.90 = 35,808.51 : x
  2. Step 2: Convert to fraction form
    66,023.31/91,111.90 = 35,808.51/x
  3. Step 3: Cross multiply
    66,023.31x = 91,111.90 × 35,808.51
  4. Step 4: Simplify right side
    66,023.31x = 3,262,581,382.27
  5. Step 5: Solve for x
    x = 3,262,581,382.27/66,023.31
  6. Step 6: Final answer
    x = 49,415.60

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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.