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Finding the Fourth Proportional to 121,953.60, 182,987.91 and 43,104.96

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Solution

The fourth proportional to 121,953.60, 182,987.91 and 43,104.96 is: 64,677.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,953.60 : 182,987.91 = 43,104.96 : x
  2. Step 2: Convert to fraction form
    121,953.60/182,987.91 = 43,104.96/x
  3. Step 3: Cross multiply
    121,953.60x = 182,987.91 × 43,104.96
  4. Step 4: Simplify right side
    121,953.60x = 7,887,686,541.03
  5. Step 5: Solve for x
    x = 7,887,686,541.03/121,953.60
  6. Step 6: Final answer
    x = 64,677.77

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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.