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Finding the Fourth Proportional to 48,909.03, 67,235.06 and 42,078.09

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Solution

The fourth proportional to 48,909.03, 67,235.06 and 42,078.09 is: 57,844.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,909.03 : 67,235.06 = 42,078.09 : x
  2. Step 2: Convert to fraction form
    48,909.03/67,235.06 = 42,078.09/x
  3. Step 3: Cross multiply
    48,909.03x = 67,235.06 × 42,078.09
  4. Step 4: Simplify right side
    48,909.03x = 2,829,122,905.84
  5. Step 5: Solve for x
    x = 2,829,122,905.84/48,909.03
  6. Step 6: Final answer
    x = 57,844.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.