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Finding the Fourth Proportional to 72,482.96, 108,698.40 and 25,085.19

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Solution

The fourth proportional to 72,482.96, 108,698.40 and 25,085.19 is: 37,618.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,482.96 : 108,698.40 = 25,085.19 : x
  2. Step 2: Convert to fraction form
    72,482.96/108,698.40 = 25,085.19/x
  3. Step 3: Cross multiply
    72,482.96x = 108,698.40 × 25,085.19
  4. Step 4: Simplify right side
    72,482.96x = 2,726,720,016.70
  5. Step 5: Solve for x
    x = 2,726,720,016.70/72,482.96
  6. Step 6: Final answer
    x = 37,618.77

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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.