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Finding the Fourth Proportional to 103,611.63, 155,417.45 and 33,490.95

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Solution

The fourth proportional to 103,611.63, 155,417.45 and 33,490.95 is: 50,236.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,611.63 : 155,417.45 = 33,490.95 : x
  2. Step 2: Convert to fraction form
    103,611.63/155,417.45 = 33,490.95/x
  3. Step 3: Cross multiply
    103,611.63x = 155,417.45 × 33,490.95
  4. Step 4: Simplify right side
    103,611.63x = 5,205,078,047.08
  5. Step 5: Solve for x
    x = 5,205,078,047.08/103,611.63
  6. Step 6: Final answer
    x = 50,236.43

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1.5x scale

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.