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Finding the Fourth Proportional to 72,615.60, 109,166.40 and 62,992.80

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Solution

The fourth proportional to 72,615.60, 109,166.40 and 62,992.80 is: 94,700.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,615.60 : 109,166.40 = 62,992.80 : x
  2. Step 2: Convert to fraction form
    72,615.60/109,166.40 = 62,992.80/x
  3. Step 3: Cross multiply
    72,615.60x = 109,166.40 × 62,992.80
  4. Step 4: Simplify right side
    72,615.60x = 6,876,697,201.92
  5. Step 5: Solve for x
    x = 6,876,697,201.92/72,615.60
  6. Step 6: Final answer
    x = 94,700.00

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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.