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Finding the Fourth Proportional to 70,076.85, 105,256.77 and 42,050.14

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Solution

The fourth proportional to 70,076.85, 105,256.77 and 42,050.14 is: 63,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,076.85 : 105,256.77 = 42,050.14 : x
  2. Step 2: Convert to fraction form
    70,076.85/105,256.77 = 42,050.14/x
  3. Step 3: Cross multiply
    70,076.85x = 105,256.77 × 42,050.14
  4. Step 4: Simplify right side
    70,076.85x = 4,426,061,493.62
  5. Step 5: Solve for x
    x = 4,426,061,493.62/70,076.85
  6. Step 6: Final answer
    x = 63,160.11

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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.