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Finding the Fourth Proportional to 51,603.94, 71,214.22 and 28,947.96

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Solution

The fourth proportional to 51,603.94, 71,214.22 and 28,947.96 is: 39,948.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,603.94 : 71,214.22 = 28,947.96 : x
  2. Step 2: Convert to fraction form
    51,603.94/71,214.22 = 28,947.96/x
  3. Step 3: Cross multiply
    51,603.94x = 71,214.22 × 28,947.96
  4. Step 4: Simplify right side
    51,603.94x = 2,061,506,391.99
  5. Step 5: Solve for x
    x = 2,061,506,391.99/51,603.94
  6. Step 6: Final answer
    x = 39,948.62

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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.