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Finding the Fourth Proportional to 68,421.94, 94,420.44 and 38,206.42

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Solution

The fourth proportional to 68,421.94, 94,420.44 and 38,206.42 is: 52,723.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,421.94 : 94,420.44 = 38,206.42 : x
  2. Step 2: Convert to fraction form
    68,421.94/94,420.44 = 38,206.42/x
  3. Step 3: Cross multiply
    68,421.94x = 94,420.44 × 38,206.42
  4. Step 4: Simplify right side
    68,421.94x = 3,607,466,751.17
  5. Step 5: Solve for x
    x = 3,607,466,751.17/68,421.94
  6. Step 6: Final answer
    x = 52,723.83

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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.