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Finding the Fourth Proportional to 74,667.60, 103,041.25 and 41,133.60

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Solution

The fourth proportional to 74,667.60, 103,041.25 and 41,133.60 is: 56,764.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,667.60 : 103,041.25 = 41,133.60 : x
  2. Step 2: Convert to fraction form
    74,667.60/103,041.25 = 41,133.60/x
  3. Step 3: Cross multiply
    74,667.60x = 103,041.25 × 41,133.60
  4. Step 4: Simplify right side
    74,667.60x = 4,238,457,561
  5. Step 5: Solve for x
    x = 4,238,457,561/74,667.60
  6. Step 6: Final answer
    x = 56,764.35

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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.