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Finding the Fourth Proportional to 143,593.32, 215,390.02 and 64,615.28

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Solution

The fourth proportional to 143,593.32, 215,390.02 and 64,615.28 is: 96,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,593.32 : 215,390.02 = 64,615.28 : x
  2. Step 2: Convert to fraction form
    143,593.32/215,390.02 = 64,615.28/x
  3. Step 3: Cross multiply
    143,593.32x = 215,390.02 × 64,615.28
  4. Step 4: Simplify right side
    143,593.32x = 13,917,486,451.51
  5. Step 5: Solve for x
    x = 13,917,486,451.51/143,593.32
  6. Step 6: Final answer
    x = 96,922.94

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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.