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Finding the Fourth Proportional to 78,064.98, 107,719.92 and 44,069.28

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Solution

The fourth proportional to 78,064.98, 107,719.92 and 44,069.28 is: 60,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,064.98 : 107,719.92 = 44,069.28 : x
  2. Step 2: Convert to fraction form
    78,064.98/107,719.92 = 44,069.28/x
  3. Step 3: Cross multiply
    78,064.98x = 107,719.92 × 44,069.28
  4. Step 4: Simplify right side
    78,064.98x = 4,747,139,316.06
  5. Step 5: Solve for x
    x = 4,747,139,316.06/78,064.98
  6. Step 6: Final answer
    x = 60,810.10

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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.