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Finding the Fourth Proportional to 113,803.70, 170,578.26 and 42,657.86

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Solution

The fourth proportional to 113,803.70, 170,578.26 and 42,657.86 is: 63,939.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,803.70 : 170,578.26 = 42,657.86 : x
  2. Step 2: Convert to fraction form
    113,803.70/170,578.26 = 42,657.86/x
  3. Step 3: Cross multiply
    113,803.70x = 170,578.26 × 42,657.86
  4. Step 4: Simplify right side
    113,803.70x = 7,276,503,534.12
  5. Step 5: Solve for x
    x = 7,276,503,534.12/113,803.70
  6. Step 6: Final answer
    x = 63,939.08

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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.