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Finding the Fourth Proportional to 74,405, 111,512.58 and 34,875.02

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Solution

The fourth proportional to 74,405, 111,512.58 and 34,875.02 is: 52,268.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,405 : 111,512.58 = 34,875.02 : x
  2. Step 2: Convert to fraction form
    74,405/111,512.58 = 34,875.02/x
  3. Step 3: Cross multiply
    74,405x = 111,512.58 × 34,875.02
  4. Step 4: Simplify right side
    74,405x = 3,889,003,457.75
  5. Step 5: Solve for x
    x = 3,889,003,457.75/74,405
  6. Step 6: Final answer
    x = 52,268.04

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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.