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Finding the Fourth Proportional to 71,028.72, 97,930.99 and 45,493.10

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Solution

The fourth proportional to 71,028.72, 97,930.99 and 45,493.10 is: 62,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,028.72 : 97,930.99 = 45,493.10 : x
  2. Step 2: Convert to fraction form
    71,028.72/97,930.99 = 45,493.10/x
  3. Step 3: Cross multiply
    71,028.72x = 97,930.99 × 45,493.10
  4. Step 4: Simplify right side
    71,028.72x = 4,455,184,321.17
  5. Step 5: Solve for x
    x = 4,455,184,321.17/71,028.72
  6. Step 6: Final answer
    x = 62,723.70

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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.