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Finding the Fourth Proportional to 78,004.95, 107,646.87 and 44,020.68

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Solution

The fourth proportional to 78,004.95, 107,646.87 and 44,020.68 is: 60,748.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.95 : 107,646.87 = 44,020.68 : x
  2. Step 2: Convert to fraction form
    78,004.95/107,646.87 = 44,020.68/x
  3. Step 3: Cross multiply
    78,004.95x = 107,646.87 × 44,020.68
  4. Step 4: Simplify right side
    78,004.95x = 4,738,688,417.27
  5. Step 5: Solve for x
    x = 4,738,688,417.27/78,004.95
  6. Step 6: Final answer
    x = 60,748.56

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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.