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Finding the Fourth Proportional to 78,851.97, 108,814.86 and 43,041.60

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Solution

The fourth proportional to 78,851.97, 108,814.86 and 43,041.60 is: 59,396.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,851.97 : 108,814.86 = 43,041.60 : x
  2. Step 2: Convert to fraction form
    78,851.97/108,814.86 = 43,041.60/x
  3. Step 3: Cross multiply
    78,851.97x = 108,814.86 × 43,041.60
  4. Step 4: Simplify right side
    78,851.97x = 4,683,565,678.18
  5. Step 5: Solve for x
    x = 4,683,565,678.18/78,851.97
  6. Step 6: Final answer
    x = 59,396.94

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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.