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Finding the Fourth Proportional to 169,978,218.80, 254,967,328.20 and 108,756,215.60

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Solution

The fourth proportional to 169,978,218.80, 254,967,328.20 and 108,756,215.60 is: 163,134,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,978,218.80 : 254,967,328.20 = 108,756,215.60 : x
  2. Step 2: Convert to fraction form
    169,978,218.80/254,967,328.20 = 108,756,215.60/x
  3. Step 3: Cross multiply
    169,978,218.80x = 254,967,328.20 × 108,756,215.60
  4. Step 4: Simplify right side
    169,978,218.80x = 27,729,281,716,675,156
  5. Step 5: Solve for x
    x = 27,729,281,716,675,156/169,978,218.80
  6. Step 6: Final answer
    x = 163,134,323.40

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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.