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Finding the Fourth Proportional to 115,139.67, 172,715.67 and 36,260.04

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Solution

The fourth proportional to 115,139.67, 172,715.67 and 36,260.04 is: 54,392.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,139.67 : 172,715.67 = 36,260.04 : x
  2. Step 2: Convert to fraction form
    115,139.67/172,715.67 = 36,260.04/x
  3. Step 3: Cross multiply
    115,139.67x = 172,715.67 × 36,260.04
  4. Step 4: Simplify right side
    115,139.67x = 6,262,677,102.83
  5. Step 5: Solve for x
    x = 6,262,677,102.83/115,139.67
  6. Step 6: Final answer
    x = 54,392.00

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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.