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Finding the Fourth Proportional to 19,692.70, 29,538.89 and 4,901.51

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Solution

The fourth proportional to 19,692.70, 29,538.89 and 4,901.51 is: 7,352.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.70 : 29,538.89 = 4,901.51 : x
  2. Step 2: Convert to fraction form
    19,692.70/29,538.89 = 4,901.51/x
  3. Step 3: Cross multiply
    19,692.70x = 29,538.89 × 4,901.51
  4. Step 4: Simplify right side
    19,692.70x = 144,785,275.49
  5. Step 5: Solve for x
    x = 144,785,275.49/19,692.70
  6. Step 6: Final answer
    x = 7,352.23

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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.