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Finding the Fourth Proportional to 58,309.86, 80,492.44 and 39,200.72

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Solution

The fourth proportional to 58,309.86, 80,492.44 and 39,200.72 is: 54,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,309.86 : 80,492.44 = 39,200.72 : x
  2. Step 2: Convert to fraction form
    58,309.86/80,492.44 = 39,200.72/x
  3. Step 3: Cross multiply
    58,309.86x = 80,492.44 × 39,200.72
  4. Step 4: Simplify right side
    58,309.86x = 3,155,361,201.04
  5. Step 5: Solve for x
    x = 3,155,361,201.04/58,309.86
  6. Step 6: Final answer
    x = 54,113.68

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1.5x scale

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.