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Finding the Fourth Proportional to 81,016.54, 111,784.89 and 47,005.32

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Solution

The fourth proportional to 81,016.54, 111,784.89 and 47,005.32 is: 64,856.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,016.54 : 111,784.89 = 47,005.32 : x
  2. Step 2: Convert to fraction form
    81,016.54/111,784.89 = 47,005.32/x
  3. Step 3: Cross multiply
    81,016.54x = 111,784.89 × 47,005.32
  4. Step 4: Simplify right side
    81,016.54x = 5,254,484,525.61
  5. Step 5: Solve for x
    x = 5,254,484,525.61/81,016.54
  6. Step 6: Final answer
    x = 64,856.94

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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.