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Finding the Fourth Proportional to 175,990.85, 242,872.16 and 99,521.39

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Solution

The fourth proportional to 175,990.85, 242,872.16 and 99,521.39 is: 137,342.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,990.85 : 242,872.16 = 99,521.39 : x
  2. Step 2: Convert to fraction form
    175,990.85/242,872.16 = 99,521.39/x
  3. Step 3: Cross multiply
    175,990.85x = 242,872.16 × 99,521.39
  4. Step 4: Simplify right side
    175,990.85x = 24,170,975,065.08
  5. Step 5: Solve for x
    x = 24,170,975,065.08/175,990.85
  6. Step 6: Final answer
    x = 137,342.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.