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Finding the Fourth Proportional to 78,593.16, 108,458.57 and 42,783.44

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Solution

The fourth proportional to 78,593.16, 108,458.57 and 42,783.44 is: 59,041.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,593.16 : 108,458.57 = 42,783.44 : x
  2. Step 2: Convert to fraction form
    78,593.16/108,458.57 = 42,783.44/x
  3. Step 3: Cross multiply
    78,593.16x = 108,458.57 × 42,783.44
  4. Step 4: Simplify right side
    78,593.16x = 4,640,230,722.08
  5. Step 5: Solve for x
    x = 4,640,230,722.08/78,593.16
  6. Step 6: Final answer
    x = 59,041.15

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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.