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Finding the Fourth Proportional to 72,467.52, 100,019.52 and 47,005.44

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Solution

The fourth proportional to 72,467.52, 100,019.52 and 47,005.44 is: 64,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,467.52 : 100,019.52 = 47,005.44 : x
  2. Step 2: Convert to fraction form
    72,467.52/100,019.52 = 47,005.44/x
  3. Step 3: Cross multiply
    72,467.52x = 100,019.52 × 47,005.44
  4. Step 4: Simplify right side
    72,467.52x = 4,701,461,546.19
  5. Step 5: Solve for x
    x = 4,701,461,546.19/72,467.52
  6. Step 6: Final answer
    x = 64,876.81

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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.