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Finding the Fourth Proportional to 71,862.42, 107,748.44 and 21,925.92

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Solution

The fourth proportional to 71,862.42, 107,748.44 and 21,925.92 is: 32,875.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,862.42 : 107,748.44 = 21,925.92 : x
  2. Step 2: Convert to fraction form
    71,862.42/107,748.44 = 21,925.92/x
  3. Step 3: Cross multiply
    71,862.42x = 107,748.44 × 21,925.92
  4. Step 4: Simplify right side
    71,862.42x = 2,362,483,136.82
  5. Step 5: Solve for x
    x = 2,362,483,136.82/71,862.42
  6. Step 6: Final answer
    x = 32,875.09

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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.