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Finding the Fourth Proportional to 74,958.84, 103,443.30 and 43,127.10

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Solution

The fourth proportional to 74,958.84, 103,443.30 and 43,127.10 is: 59,515.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,958.84 : 103,443.30 = 43,127.10 : x
  2. Step 2: Convert to fraction form
    74,958.84/103,443.30 = 43,127.10/x
  3. Step 3: Cross multiply
    74,958.84x = 103,443.30 × 43,127.10
  4. Step 4: Simplify right side
    74,958.84x = 4,461,209,543.43
  5. Step 5: Solve for x
    x = 4,461,209,543.43/74,958.84
  6. Step 6: Final answer
    x = 59,515.46

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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.