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Finding the Fourth Proportional to 225,352.15, 310,989.65 and 123,375.91

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Solution

The fourth proportional to 225,352.15, 310,989.65 and 123,375.91 is: 170,260.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,352.15 : 310,989.65 = 123,375.91 : x
  2. Step 2: Convert to fraction form
    225,352.15/310,989.65 = 123,375.91/x
  3. Step 3: Cross multiply
    225,352.15x = 310,989.65 × 123,375.91
  4. Step 4: Simplify right side
    225,352.15x = 38,368,628,897.50
  5. Step 5: Solve for x
    x = 38,368,628,897.50/225,352.15
  6. Step 6: Final answer
    x = 170,260.77

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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.