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Finding the Fourth Proportional to 64,110.61, 88,415.09 and 53,390.90

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Solution

The fourth proportional to 64,110.61, 88,415.09 and 53,390.90 is: 73,631.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,110.61 : 88,415.09 = 53,390.90 : x
  2. Step 2: Convert to fraction form
    64,110.61/88,415.09 = 53,390.90/x
  3. Step 3: Cross multiply
    64,110.61x = 88,415.09 × 53,390.90
  4. Step 4: Simplify right side
    64,110.61x = 4,720,561,185.97
  5. Step 5: Solve for x
    x = 4,720,561,185.97/64,110.61
  6. Step 6: Final answer
    x = 73,631.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.