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Finding the Fourth Proportional to 118,625.13, 177,931.31 and 29,878.47

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Solution

The fourth proportional to 118,625.13, 177,931.31 and 29,878.47 is: 44,816.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,625.13 : 177,931.31 = 29,878.47 : x
  2. Step 2: Convert to fraction form
    118,625.13/177,931.31 = 29,878.47/x
  3. Step 3: Cross multiply
    118,625.13x = 177,931.31 × 29,878.47
  4. Step 4: Simplify right side
    118,625.13x = 5,316,315,158.50
  5. Step 5: Solve for x
    x = 5,316,315,158.50/118,625.13
  6. Step 6: Final answer
    x = 44,816.10

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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.