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Finding the Fourth Proportional to 72,228.66, 99,467.64 and 59,536.77

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Solution

The fourth proportional to 72,228.66, 99,467.64 and 59,536.77 is: 81,989.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,228.66 : 99,467.64 = 59,536.77 : x
  2. Step 2: Convert to fraction form
    72,228.66/99,467.64 = 59,536.77/x
  3. Step 3: Cross multiply
    72,228.66x = 99,467.64 × 59,536.77
  4. Step 4: Simplify right side
    72,228.66x = 5,921,982,005.12
  5. Step 5: Solve for x
    x = 5,921,982,005.12/72,228.66
  6. Step 6: Final answer
    x = 81,989.37

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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.