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Finding the Fourth Proportional to 74,998.68, 103,288.14 and 73,365.72

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Solution

The fourth proportional to 74,998.68, 103,288.14 and 73,365.72 is: 101,039.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,998.68 : 103,288.14 = 73,365.72 : x
  2. Step 2: Convert to fraction form
    74,998.68/103,288.14 = 73,365.72/x
  3. Step 3: Cross multiply
    74,998.68x = 103,288.14 × 73,365.72
  4. Step 4: Simplify right side
    74,998.68x = 7,577,808,758.56
  5. Step 5: Solve for x
    x = 7,577,808,758.56/74,998.68
  6. Step 6: Final answer
    x = 101,039.23

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1.5x scale

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.