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Finding the Fourth Proportional to 112,051.56, 154,630.32 and 61,750.56

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Solution

The fourth proportional to 112,051.56, 154,630.32 and 61,750.56 is: 85,215.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,051.56 : 154,630.32 = 61,750.56 : x
  2. Step 2: Convert to fraction form
    112,051.56/154,630.32 = 61,750.56/x
  3. Step 3: Cross multiply
    112,051.56x = 154,630.32 × 61,750.56
  4. Step 4: Simplify right side
    112,051.56x = 9,548,508,852.98
  5. Step 5: Solve for x
    x = 9,548,508,852.98/112,051.56
  6. Step 6: Final answer
    x = 85,215.31

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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.