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Finding the Fourth Proportional to 61,774.94, 85,204.41 and 39,117.62

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Solution

The fourth proportional to 61,774.94, 85,204.41 and 39,117.62 is: 53,953.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,774.94 : 85,204.41 = 39,117.62 : x
  2. Step 2: Convert to fraction form
    61,774.94/85,204.41 = 39,117.62/x
  3. Step 3: Cross multiply
    61,774.94x = 85,204.41 × 39,117.62
  4. Step 4: Simplify right side
    61,774.94x = 3,332,993,732.70
  5. Step 5: Solve for x
    x = 3,332,993,732.70/61,774.94
  6. Step 6: Final answer
    x = 53,953.82

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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.