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Finding the Fourth Proportional to 172,176.74, 258,264.75 and 45,816.98

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Solution

The fourth proportional to 172,176.74, 258,264.75 and 45,816.98 is: 68,725.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,176.74 : 258,264.75 = 45,816.98 : x
  2. Step 2: Convert to fraction form
    172,176.74/258,264.75 = 45,816.98/x
  3. Step 3: Cross multiply
    172,176.74x = 258,264.75 × 45,816.98
  4. Step 4: Simplify right side
    172,176.74x = 11,832,910,885.46
  5. Step 5: Solve for x
    x = 11,832,910,885.46/172,176.74
  6. Step 6: Final answer
    x = 68,725.38

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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.