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Finding the Fourth Proportional to 167,654,987.80, 251,482,481.70 and 159,718,802.20

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Solution

The fourth proportional to 167,654,987.80, 251,482,481.70 and 159,718,802.20 is: 239,578,203.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,654,987.80 : 251,482,481.70 = 159,718,802.20 : x
  2. Step 2: Convert to fraction form
    167,654,987.80/251,482,481.70 = 159,718,802.20/x
  3. Step 3: Cross multiply
    167,654,987.80x = 251,482,481.70 × 159,718,802.20
  4. Step 4: Simplify right side
    167,654,987.80x = 40,166,480,751,407,416
  5. Step 5: Solve for x
    x = 40,166,480,751,407,416/167,654,987.80
  6. Step 6: Final answer
    x = 239,578,203.30

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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.