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Finding the Fourth Proportional to 70,500.96, 105,720.36 and 33,030.84

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Solution

The fourth proportional to 70,500.96, 105,720.36 and 33,030.84 is: 49,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,500.96 : 105,720.36 = 33,030.84 : x
  2. Step 2: Convert to fraction form
    70,500.96/105,720.36 = 33,030.84/x
  3. Step 3: Cross multiply
    70,500.96x = 105,720.36 × 33,030.84
  4. Step 4: Simplify right side
    70,500.96x = 3,492,032,295.90
  5. Step 5: Solve for x
    x = 3,492,032,295.90/70,500.96
  6. Step 6: Final answer
    x = 49,531.70

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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.