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Finding the Fourth Proportional to 74,147.16, 111,142.98 and 34,671

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Solution

The fourth proportional to 74,147.16, 111,142.98 and 34,671 is: 51,970.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,147.16 : 111,142.98 = 34,671 : x
  2. Step 2: Convert to fraction form
    74,147.16/111,142.98 = 34,671/x
  3. Step 3: Cross multiply
    74,147.16x = 111,142.98 × 34,671
  4. Step 4: Simplify right side
    74,147.16x = 3,853,438,259.58
  5. Step 5: Solve for x
    x = 3,853,438,259.58/74,147.16
  6. Step 6: Final answer
    x = 51,970.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.