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Finding the Fourth Proportional to 347,803.80, 521,657.10 and 111,170.40

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Solution

The fourth proportional to 347,803.80, 521,657.10 and 111,170.40 is: 166,740.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,803.80 : 521,657.10 = 111,170.40 : x
  2. Step 2: Convert to fraction form
    347,803.80/521,657.10 = 111,170.40/x
  3. Step 3: Cross multiply
    347,803.80x = 521,657.10 × 111,170.40
  4. Step 4: Simplify right side
    347,803.80x = 57,992,828,469.84
  5. Step 5: Solve for x
    x = 57,992,828,469.84/347,803.80
  6. Step 6: Final answer
    x = 166,740.07

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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.