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Finding the Fourth Proportional to 108,859.55, 150,226.16 and 61,112.86

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Solution

The fourth proportional to 108,859.55, 150,226.16 and 61,112.86 is: 84,335.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,859.55 : 150,226.16 = 61,112.86 : x
  2. Step 2: Convert to fraction form
    108,859.55/150,226.16 = 61,112.86/x
  3. Step 3: Cross multiply
    108,859.55x = 150,226.16 × 61,112.86
  4. Step 4: Simplify right side
    108,859.55x = 9,180,749,603.29
  5. Step 5: Solve for x
    x = 9,180,749,603.29/108,859.55
  6. Step 6: Final answer
    x = 84,335.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.