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Finding the Fourth Proportional to 43,090.88, 64,643.22 and 15,019.02

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Solution

The fourth proportional to 43,090.88, 64,643.22 and 15,019.02 is: 22,530.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,090.88 : 64,643.22 = 15,019.02 : x
  2. Step 2: Convert to fraction form
    43,090.88/64,643.22 = 15,019.02/x
  3. Step 3: Cross multiply
    43,090.88x = 64,643.22 × 15,019.02
  4. Step 4: Simplify right side
    43,090.88x = 970,877,814.04
  5. Step 5: Solve for x
    x = 970,877,814.04/43,090.88
  6. Step 6: Final answer
    x = 22,530.94

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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.