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Finding the Fourth Proportional to 172,957.50, 259,444.20 and 53,005.86

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Solution

The fourth proportional to 172,957.50, 259,444.20 and 53,005.86 is: 79,511.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,957.50 : 259,444.20 = 53,005.86 : x
  2. Step 2: Convert to fraction form
    172,957.50/259,444.20 = 53,005.86/x
  3. Step 3: Cross multiply
    172,957.50x = 259,444.20 × 53,005.86
  4. Step 4: Simplify right side
    172,957.50x = 13,752,062,943.01
  5. Step 5: Solve for x
    x = 13,752,062,943.01/172,957.50
  6. Step 6: Final answer
    x = 79,511.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.