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Finding the Fourth Proportional to 118,166.40, 177,265.80 and 39,272.40

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Solution

The fourth proportional to 118,166.40, 177,265.80 and 39,272.40 is: 58,913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,166.40 : 177,265.80 = 39,272.40 : x
  2. Step 2: Convert to fraction form
    118,166.40/177,265.80 = 39,272.40/x
  3. Step 3: Cross multiply
    118,166.40x = 177,265.80 × 39,272.40
  4. Step 4: Simplify right side
    118,166.40x = 6,961,653,403.92
  5. Step 5: Solve for x
    x = 6,961,653,403.92/118,166.40
  6. Step 6: Final answer
    x = 58,913.98

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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.