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Finding the Fourth Proportional to 117,064.80, 175,597.20 and 115,315.20

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Solution

The fourth proportional to 117,064.80, 175,597.20 and 115,315.20 is: 172,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,064.80 : 175,597.20 = 115,315.20 : x
  2. Step 2: Convert to fraction form
    117,064.80/175,597.20 = 115,315.20/x
  3. Step 3: Cross multiply
    117,064.80x = 175,597.20 × 115,315.20
  4. Step 4: Simplify right side
    117,064.80x = 20,249,026,237.44
  5. Step 5: Solve for x
    x = 20,249,026,237.44/117,064.80
  6. Step 6: Final answer
    x = 172,972.80

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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.