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Finding the Fourth Proportional to 57,157.67, 78,878.88 and 33,275.63

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Solution

The fourth proportional to 57,157.67, 78,878.88 and 33,275.63 is: 45,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,157.67 : 78,878.88 = 33,275.63 : x
  2. Step 2: Convert to fraction form
    57,157.67/78,878.88 = 33,275.63/x
  3. Step 3: Cross multiply
    57,157.67x = 78,878.88 × 33,275.63
  4. Step 4: Simplify right side
    57,157.67x = 2,624,744,031.30
  5. Step 5: Solve for x
    x = 2,624,744,031.30/57,157.67
  6. Step 6: Final answer
    x = 45,921.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.