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Finding the Fourth Proportional to 78,762.76, 108,713.28 and 44,791.10

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Solution

The fourth proportional to 78,762.76, 108,713.28 and 44,791.10 is: 61,823.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,762.76 : 108,713.28 = 44,791.10 : x
  2. Step 2: Convert to fraction form
    78,762.76/108,713.28 = 44,791.10/x
  3. Step 3: Cross multiply
    78,762.76x = 108,713.28 × 44,791.10
  4. Step 4: Simplify right side
    78,762.76x = 4,869,387,395.81
  5. Step 5: Solve for x
    x = 4,869,387,395.81/78,762.76
  6. Step 6: Final answer
    x = 61,823.47

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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.