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Finding the Fourth Proportional to 66,642.24, 91,995.84 and 41,508.48

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Solution

The fourth proportional to 66,642.24, 91,995.84 and 41,508.48 is: 57,300.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,642.24 : 91,995.84 = 41,508.48 : x
  2. Step 2: Convert to fraction form
    66,642.24/91,995.84 = 41,508.48/x
  3. Step 3: Cross multiply
    66,642.24x = 91,995.84 × 41,508.48
  4. Step 4: Simplify right side
    66,642.24x = 3,818,607,484.72
  5. Step 5: Solve for x
    x = 3,818,607,484.72/66,642.24
  6. Step 6: Final answer
    x = 57,300.11

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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.