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Finding the Fourth Proportional to 113,881.92, 170,846.88 and 42,805.12

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Solution

The fourth proportional to 113,881.92, 170,846.88 and 42,805.12 is: 64,216.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,881.92 : 170,846.88 = 42,805.12 : x
  2. Step 2: Convert to fraction form
    113,881.92/170,846.88 = 42,805.12/x
  3. Step 3: Cross multiply
    113,881.92x = 170,846.88 × 42,805.12
  4. Step 4: Simplify right side
    113,881.92x = 7,313,121,200.03
  5. Step 5: Solve for x
    x = 7,313,121,200.03/113,881.92
  6. Step 6: Final answer
    x = 64,216.70

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1.5x scale

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.