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Finding the Fourth Proportional to 79,041.60, 118,430.76 and 55,618.82

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Solution

The fourth proportional to 79,041.60, 118,430.76 and 55,618.82 is: 83,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,041.60 : 118,430.76 = 55,618.82 : x
  2. Step 2: Convert to fraction form
    79,041.60/118,430.76 = 55,618.82/x
  3. Step 3: Cross multiply
    79,041.60x = 118,430.76 × 55,618.82
  4. Step 4: Simplify right side
    79,041.60x = 6,586,979,122.90
  5. Step 5: Solve for x
    x = 6,586,979,122.90/79,041.60
  6. Step 6: Final answer
    x = 83,335.60

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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.