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Finding the Fourth Proportional to 175,625.40, 263,431.70 and 70,415.80

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Solution

The fourth proportional to 175,625.40, 263,431.70 and 70,415.80 is: 105,621.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,625.40 : 263,431.70 = 70,415.80 : x
  2. Step 2: Convert to fraction form
    175,625.40/263,431.70 = 70,415.80/x
  3. Step 3: Cross multiply
    175,625.40x = 263,431.70 × 70,415.80
  4. Step 4: Simplify right side
    175,625.40x = 18,549,753,900.86
  5. Step 5: Solve for x
    x = 18,549,753,900.86/175,625.40
  6. Step 6: Final answer
    x = 105,621.13

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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.