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Finding the Fourth Proportional to 79,646.35, 109,911.12 and 43,835.59

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Solution

The fourth proportional to 79,646.35, 109,911.12 and 43,835.59 is: 60,492.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,646.35 : 109,911.12 = 43,835.59 : x
  2. Step 2: Convert to fraction form
    79,646.35/109,911.12 = 43,835.59/x
  3. Step 3: Cross multiply
    79,646.35x = 109,911.12 × 43,835.59
  4. Step 4: Simplify right side
    79,646.35x = 4,818,018,792.76
  5. Step 5: Solve for x
    x = 4,818,018,792.76/79,646.35
  6. Step 6: Final answer
    x = 60,492.65

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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.