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Finding the Fourth Proportional to 118,411.77, 177,615.15 and 38,449.65

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Solution

The fourth proportional to 118,411.77, 177,615.15 and 38,449.65 is: 57,673.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,411.77 : 177,615.15 = 38,449.65 : x
  2. Step 2: Convert to fraction form
    118,411.77/177,615.15 = 38,449.65/x
  3. Step 3: Cross multiply
    118,411.77x = 177,615.15 × 38,449.65
  4. Step 4: Simplify right side
    118,411.77x = 6,829,240,352.20
  5. Step 5: Solve for x
    x = 6,829,240,352.20/118,411.77
  6. Step 6: Final answer
    x = 57,673.66

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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.