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Finding the Fourth Proportional to 117,065.80, 175,080.30 and 98,403.40

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Solution

The fourth proportional to 117,065.80, 175,080.30 and 98,403.40 is: 147,169.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,065.80 : 175,080.30 = 98,403.40 : x
  2. Step 2: Convert to fraction form
    117,065.80/175,080.30 = 98,403.40/x
  3. Step 3: Cross multiply
    117,065.80x = 175,080.30 × 98,403.40
  4. Step 4: Simplify right side
    117,065.80x = 17,228,496,793.02
  5. Step 5: Solve for x
    x = 17,228,496,793.02/117,065.80
  6. Step 6: Final answer
    x = 147,169.34

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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.