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Finding the Fourth Proportional to 156,997, 216,655.86 and 89,933.32

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Solution

The fourth proportional to 156,997, 216,655.86 and 89,933.32 is: 124,107.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,997 : 216,655.86 = 89,933.32 : x
  2. Step 2: Convert to fraction form
    156,997/216,655.86 = 89,933.32/x
  3. Step 3: Cross multiply
    156,997x = 216,655.86 × 89,933.32
  4. Step 4: Simplify right side
    156,997x = 19,484,580,787.26
  5. Step 5: Solve for x
    x = 19,484,580,787.26/156,997
  6. Step 6: Final answer
    x = 124,107.98

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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.