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Finding the Fourth Proportional to 71,971.02, 99,360.16 and 50,526.58

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Solution

The fourth proportional to 71,971.02, 99,360.16 and 50,526.58 is: 69,754.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,971.02 : 99,360.16 = 50,526.58 : x
  2. Step 2: Convert to fraction form
    71,971.02/99,360.16 = 50,526.58/x
  3. Step 3: Cross multiply
    71,971.02x = 99,360.16 × 50,526.58
  4. Step 4: Simplify right side
    71,971.02x = 5,020,329,073.05
  5. Step 5: Solve for x
    x = 5,020,329,073.05/71,971.02
  6. Step 6: Final answer
    x = 69,754.87

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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.