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Finding the Fourth Proportional to 66,618.72, 91,973.88 and 41,502.24

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Solution

The fourth proportional to 66,618.72, 91,973.88 and 41,502.24 is: 57,298.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,618.72 : 91,973.88 = 41,502.24 : x
  2. Step 2: Convert to fraction form
    66,618.72/91,973.88 = 41,502.24/x
  3. Step 3: Cross multiply
    66,618.72x = 91,973.88 × 41,502.24
  4. Step 4: Simplify right side
    66,618.72x = 3,817,122,041.49
  5. Step 5: Solve for x
    x = 3,817,122,041.49/66,618.72
  6. Step 6: Final answer
    x = 57,298.04

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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.