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Finding the Fourth Proportional to 70,533.89, 105,842.21 and 26,191.43

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Solution

The fourth proportional to 70,533.89, 105,842.21 and 26,191.43 is: 39,302.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,533.89 : 105,842.21 = 26,191.43 : x
  2. Step 2: Convert to fraction form
    70,533.89/105,842.21 = 26,191.43/x
  3. Step 3: Cross multiply
    70,533.89x = 105,842.21 × 26,191.43
  4. Step 4: Simplify right side
    70,533.89x = 2,772,158,174.09
  5. Step 5: Solve for x
    x = 2,772,158,174.09/70,533.89
  6. Step 6: Final answer
    x = 39,302.50

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1.5x scale

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.