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Finding the Fourth Proportional to 89,603.52, 123,611.49 and 53,731.32

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Solution

The fourth proportional to 89,603.52, 123,611.49 and 53,731.32 is: 74,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,603.52 : 123,611.49 = 53,731.32 : x
  2. Step 2: Convert to fraction form
    89,603.52/123,611.49 = 53,731.32/x
  3. Step 3: Cross multiply
    89,603.52x = 123,611.49 × 53,731.32
  4. Step 4: Simplify right side
    89,603.52x = 6,641,808,524.87
  5. Step 5: Solve for x
    x = 6,641,808,524.87/89,603.52
  6. Step 6: Final answer
    x = 74,124.42

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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.