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Finding the Fourth Proportional to 70,460.55, 105,692.85 and 17,869.95

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Solution

The fourth proportional to 70,460.55, 105,692.85 and 17,869.95 is: 26,805.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,460.55 : 105,692.85 = 17,869.95 : x
  2. Step 2: Convert to fraction form
    70,460.55/105,692.85 = 17,869.95/x
  3. Step 3: Cross multiply
    70,460.55x = 105,692.85 × 17,869.95
  4. Step 4: Simplify right side
    70,460.55x = 1,888,725,944.86
  5. Step 5: Solve for x
    x = 1,888,725,944.86/70,460.55
  6. Step 6: Final answer
    x = 26,805.44

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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.