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Finding the Fourth Proportional to 114,039.68, 170,820.48 and 72,279.68

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Solution

The fourth proportional to 114,039.68, 170,820.48 and 72,279.68 is: 108,268.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,039.68 : 170,820.48 = 72,279.68 : x
  2. Step 2: Convert to fraction form
    114,039.68/170,820.48 = 72,279.68/x
  3. Step 3: Cross multiply
    114,039.68x = 170,820.48 × 72,279.68
  4. Step 4: Simplify right side
    114,039.68x = 12,346,849,631.85
  5. Step 5: Solve for x
    x = 12,346,849,631.85/114,039.68
  6. Step 6: Final answer
    x = 108,268.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.