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Finding the Fourth Proportional to 74,960.84, 103,446.06 and 43,129.10

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Solution

The fourth proportional to 74,960.84, 103,446.06 and 43,129.10 is: 59,518.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,960.84 : 103,446.06 = 43,129.10 : x
  2. Step 2: Convert to fraction form
    74,960.84/103,446.06 = 43,129.10/x
  3. Step 3: Cross multiply
    74,960.84x = 103,446.06 × 43,129.10
  4. Step 4: Simplify right side
    74,960.84x = 4,461,535,466.35
  5. Step 5: Solve for x
    x = 4,461,535,466.35/74,960.84
  6. Step 6: Final answer
    x = 59,518.22

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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.