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Finding the Fourth Proportional to 48,670.60, 73,005.90 and 42,255.40

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Solution

The fourth proportional to 48,670.60, 73,005.90 and 42,255.40 is: 63,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,670.60 : 73,005.90 = 42,255.40 : x
  2. Step 2: Convert to fraction form
    48,670.60/73,005.90 = 42,255.40/x
  3. Step 3: Cross multiply
    48,670.60x = 73,005.90 × 42,255.40
  4. Step 4: Simplify right side
    48,670.60x = 3,084,893,506.86
  5. Step 5: Solve for x
    x = 3,084,893,506.86/48,670.60
  6. Step 6: Final answer
    x = 63,383.10

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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.