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Finding the Fourth Proportional to 78,558.66, 108,402.71 and 44,556.28

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Solution

The fourth proportional to 78,558.66, 108,402.71 and 44,556.28 is: 61,482.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,558.66 : 108,402.71 = 44,556.28 : x
  2. Step 2: Convert to fraction form
    78,558.66/108,402.71 = 44,556.28/x
  3. Step 3: Cross multiply
    78,558.66x = 108,402.71 × 44,556.28
  4. Step 4: Simplify right side
    78,558.66x = 4,830,021,005.73
  5. Step 5: Solve for x
    x = 4,830,021,005.73/78,558.66
  6. Step 6: Final answer
    x = 61,482.99

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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.