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Finding the Fourth Proportional to 134,064.90, 201,090.96 and 45,321.90

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Solution

The fourth proportional to 134,064.90, 201,090.96 and 45,321.90 is: 67,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,064.90 : 201,090.96 = 45,321.90 : x
  2. Step 2: Convert to fraction form
    134,064.90/201,090.96 = 45,321.90/x
  3. Step 3: Cross multiply
    134,064.90x = 201,090.96 × 45,321.90
  4. Step 4: Simplify right side
    134,064.90x = 9,113,824,380.02
  5. Step 5: Solve for x
    x = 9,113,824,380.02/134,064.90
  6. Step 6: Final answer
    x = 67,980.69

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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.