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Finding the Fourth Proportional to 73,124.24, 100,911 and 39,590

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Solution

The fourth proportional to 73,124.24, 100,911 and 39,590 is: 54,633.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,124.24 : 100,911 = 39,590 : x
  2. Step 2: Convert to fraction form
    73,124.24/100,911 = 39,590/x
  3. Step 3: Cross multiply
    73,124.24x = 100,911 × 39,590
  4. Step 4: Simplify right side
    73,124.24x = 3,995,066,490
  5. Step 5: Solve for x
    x = 3,995,066,490/73,124.24
  6. Step 6: Final answer
    x = 54,633.96

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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.