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Finding the Fourth Proportional to 74,810, 103,237.80 and 41,276

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Solution

The fourth proportional to 74,810, 103,237.80 and 41,276 is: 56,960.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,810 : 103,237.80 = 41,276 : x
  2. Step 2: Convert to fraction form
    74,810/103,237.80 = 41,276/x
  3. Step 3: Cross multiply
    74,810x = 103,237.80 × 41,276
  4. Step 4: Simplify right side
    74,810x = 4,261,243,432.80
  5. Step 5: Solve for x
    x = 4,261,243,432.80/74,810
  6. Step 6: Final answer
    x = 56,960.88

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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.