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Finding the Fourth Proportional to 121,697.92, 182,440.32 and 58,486.48

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Solution

The fourth proportional to 121,697.92, 182,440.32 and 58,486.48 is: 87,678.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,697.92 : 182,440.32 = 58,486.48 : x
  2. Step 2: Convert to fraction form
    121,697.92/182,440.32 = 58,486.48/x
  3. Step 3: Cross multiply
    121,697.92x = 182,440.32 × 58,486.48
  4. Step 4: Simplify right side
    121,697.92x = 10,670,292,126.87
  5. Step 5: Solve for x
    x = 10,670,292,126.87/121,697.92
  6. Step 6: Final answer
    x = 87,678.51

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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.