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Finding the Fourth Proportional to 78,430.73, 108,250.11 and 46,593.47

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Solution

The fourth proportional to 78,430.73, 108,250.11 and 46,593.47 is: 64,308.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,430.73 : 108,250.11 = 46,593.47 : x
  2. Step 2: Convert to fraction form
    78,430.73/108,250.11 = 46,593.47/x
  3. Step 3: Cross multiply
    78,430.73x = 108,250.11 × 46,593.47
  4. Step 4: Simplify right side
    78,430.73x = 5,043,748,523.41
  5. Step 5: Solve for x
    x = 5,043,748,523.41/78,430.73
  6. Step 6: Final answer
    x = 64,308.32

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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.