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Finding the Fourth Proportional to 125,762.76, 188,585.82 and 73,187.28

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Solution

The fourth proportional to 125,762.76, 188,585.82 and 73,187.28 is: 109,746.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,762.76 : 188,585.82 = 73,187.28 : x
  2. Step 2: Convert to fraction form
    125,762.76/188,585.82 = 73,187.28/x
  3. Step 3: Cross multiply
    125,762.76x = 188,585.82 × 73,187.28
  4. Step 4: Simplify right side
    125,762.76x = 13,802,083,212.37
  5. Step 5: Solve for x
    x = 13,802,083,212.37/125,762.76
  6. Step 6: Final answer
    x = 109,746.98

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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.