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Finding the Fourth Proportional to 64,368.81, 96,579.77 and 28,326.78

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Solution

The fourth proportional to 64,368.81, 96,579.77 and 28,326.78 is: 42,501.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,368.81 : 96,579.77 = 28,326.78 : x
  2. Step 2: Convert to fraction form
    64,368.81/96,579.77 = 28,326.78/x
  3. Step 3: Cross multiply
    64,368.81x = 96,579.77 × 28,326.78
  4. Step 4: Simplify right side
    64,368.81x = 2,735,793,755.61
  5. Step 5: Solve for x
    x = 2,735,793,755.61/64,368.81
  6. Step 6: Final answer
    x = 42,501.85

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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.