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Finding the Fourth Proportional to 172,399.77, 258,598.80 and 44,315.91

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Solution

The fourth proportional to 172,399.77, 258,598.80 and 44,315.91 is: 66,473.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,399.77 : 258,598.80 = 44,315.91 : x
  2. Step 2: Convert to fraction form
    172,399.77/258,598.80 = 44,315.91/x
  3. Step 3: Cross multiply
    172,399.77x = 258,598.80 × 44,315.91
  4. Step 4: Simplify right side
    172,399.77x = 11,460,041,146.91
  5. Step 5: Solve for x
    x = 11,460,041,146.91/172,399.77
  6. Step 6: Final answer
    x = 66,473.65

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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.