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Finding the Fourth Proportional to 71,598.51, 107,389.35 and 19,012.05

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Solution

The fourth proportional to 71,598.51, 107,389.35 and 19,012.05 is: 28,515.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,598.51 : 107,389.35 = 19,012.05 : x
  2. Step 2: Convert to fraction form
    71,598.51/107,389.35 = 19,012.05/x
  3. Step 3: Cross multiply
    71,598.51x = 107,389.35 × 19,012.05
  4. Step 4: Simplify right side
    71,598.51x = 2,041,691,691.67
  5. Step 5: Solve for x
    x = 2,041,691,691.67/71,598.51
  6. Step 6: Final answer
    x = 28,515.84

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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.