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Finding the Fourth Proportional to 111,400.10, 153,741.86 and 61,108.82

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Solution

The fourth proportional to 111,400.10, 153,741.86 and 61,108.82 is: 84,335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,400.10 : 153,741.86 = 61,108.82 : x
  2. Step 2: Convert to fraction form
    111,400.10/153,741.86 = 61,108.82/x
  3. Step 3: Cross multiply
    111,400.10x = 153,741.86 × 61,108.82
  4. Step 4: Simplify right side
    111,400.10x = 9,394,983,343.66
  5. Step 5: Solve for x
    x = 9,394,983,343.66/111,400.10
  6. Step 6: Final answer
    x = 84,335.50

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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.